This is the fourth in a series of articles designed to introduce an integrated pest management framework for cannabis cultivation facilities. To see Part One, an overview of the plan and pest identification, click here. For Part Two, on pest monitoring and record keeping, click here. For Part Three, on preventative measures, click here. Part Five comes out next week on how to build a framework for control actions and how to monitor them. More to come!
This is Part 4: Direct Control Options
Even when the best methods are implemented and precautions are taken to protect your infrastructure, determined pests can penetrate your perimeter. Before you see crawling, hopping or flying insects, or sickly-looking plants, be sure to implement your physical protection (positive pressure airflow sealed facilities) and personal hygiene methods (shoe baths, sticky mats, & air shower entrances) to protect your crops. Equip your employees with personal protection equipment (PPE) proper gloves, masks and clothing as discussed in our last chapter, preventative measures.
Figure 1: Fungus Gnats Unleashed In A Grow Room
When things do break-out beyond your acceptable thresholds, Direct Control Options include non-chemical microbial biofungicides, microbial bioinsecticides and direct chemical control options. Lots of big scary words there, all of which are toxic even under safe application methods and when used at recommended concentrations levels. This means training in their use and protective clothing is required. Careful application of these control options is necessary so you exterminate your pests and not your people! This seems obvious, but do not just “wing it.”
These chemical elements can be applied in diluted concentration levels, manual wipe-down application, concentrated flush frequencies, or root drench applications, foliar spray mist applications, HVAC aerial diffusions and aerial knock-down sprays. You may even choose to remove badly infected plants and destroy them completely.
Use experts when you are planning for these tools. All of these methods require handling and safety precautions. Proper breathing filters, eye & skin protection, as well as disposable gowns/hazmat suits should be used when applications are performed and until the applications have dissipated to safe levels. Be careful not to co-mingle removed plant materials. Gloves become transport and infection spreaders after use.
Please also be sure to review your harvest testing requirements and what treatments are safe for your consumers and within legal limits. No one wants to have their harvest rejected due to pesticide contamination.
Figure 2: Municipal Water Treatment, RAIR Cannabis, Michigan
Clean-up after application may be required depending on the bioinsecticide or chemical that is used. Again, always ensure the safety of your employees and take precautions.
Start the application of your control options with your site map, room assignments and scout monitoring teams. Where does air flow into and within the facility? When your scouting team count logs go beyond your acceptable thresholds, here are some options for you.
Let’s begin with cleaning your irrigation and nutrient water sources. For a walk-through tutorial for incoming water treatment, humidity recovery and nutrient water recycling, please review the video tour of Water Treatment at RAIR Cannabis to see how an expert has done it.
From the IPM Planning Guide standpoint, peroxide and acid sterilizers can be used to clear irrigation water, for surface wipe-downs or as direct plant applications. We will cover those first. Caustic sterilizers require PPE for cleaning. Forgive my image here, we were just using water.
Plant interacting interfaces, i.e. surfaces, benches, walls, floors, trays, utensils, clippers, etc. should be sterilized with every use. Methods can include direct wipe-down or scrub, concentrated or diluted sprays or room vaporizers. A good example of hydrogen peroxide (H2O2) liquid would be a food grade sanitizer with 3-35% H2O2 content. Use acceptable diluted versions of these cleaners as appropriate.
Figure 3: Cleaning & Scrubbing, Where’s the PPE?
A commercial example would be Zerotol 2.0 with 27% H2O2 & their proprietary acid mix. Alternatively, you can use direct hydrogen peroxide generators from commercial sources to generate your H2O2 at various concentrations. More detailed examples are included in the complete Integrated Pest Management Guide (link at the end of this article). Establish your procedures for sterilizing your rooms and tools before you introduce plants, and describe what is to be done after every harvest and room turn. Track the cleaning materials used for your operational records. You will find this useful to track operational cost over time.
Sanitizing Acids for Surfaces & Irrigation Sources
Similar to hydrogen peroxide, hypochlorous acid (HOCl) comes in many commercial forms and can also be generated onsite using purchased generators. Commercial mix examples are UC Roots, Watermax and Athena Cleanse. They come in 0.028% to 15% concentrations. Self-generators range in output from highly precise 0.01% to 1% concentrations with more examples in the guide.
Treatment Tools
OK, so enough on cleaning preparation. Here are some tools that can be used to fight back against a pest intrusion:
Non-Chemical Microbial Biofungicide for Pathogens in Soil or Fertigation Water
Microbial fungicides are available to clear nutrient irrigation systems by minimizing pathogens and improving plant resistance to infections. Some fungicide versions target root pathogens by attacking the diseases directly. Others control or suppress common water carried challenges like pythium, rhizoctonia, phytophthora, fusarium and others. Brand names include Botanicare, Bonide, BioWorks, Actinovate, Mycostop and many more. Details covered in the guide.
Non-Chemical Microbial Bioinsecticides for Larval Stages
These biological tools attack the organisms or insects at a physical or mechanical way by breaking down the pest’s nervous system, biochemistry, or structural integrity (exoskeletons, etc.). These are engineered or living organisms (bugs to attack bugs) that are developed as targeted attacks for specific pests. Brand names are BioCeres, Botanigard, Venerate, Bio Solutions and others.
Minimal Risk Chemical Pesticides for Airborne Critters
Figure 3: Example Fungus Gnat Infestation – Royal Queen Seeds blog
Regularly approved for used in most locales, essential oils, natural acids (like citric acid) and insecticidal soap are commonly available in every hydroponic store. These work very well as safe spray “knock-down” insecticides for crawling or flying pests. Commercial examples use a proprietary mix of various oils, citric acids or isopropyl alcohol to do their task (examples in guide). Insecticidal soaps and fungicides for surface cleaning perform a similar purpose and typically use potassium salts or fatty acid mixtures.
Biochemical Pesticides
These tools are used to inhibit insect or fungal growth to acceptable levels. The multifaceted and commonly used neem oil comes in many commercial versions and is a naturally occurring pesticide extracted from the leaves and seeds of the neem tree. Example brand names are Bonide, Monterey, Triact and others. They range in concentrations from 0.9% to 70% concentrations. These oils suffocate living organisms or eliminate moisture to kill insects, spores or fungus at their initiation and throughout their lifespan.
Another option here are Azadirachtins. These act as insect growth regulators and disrupt the bugs natural evolution. Brand names are AzaGuard, AzaMax and others in the guide.
In summary, this week
We summarized some of the many pest control options available for water treatment, soil borne, intermediate or flying pests. We also covered various concentrations for these pesticide and sterilizer options. If you are not familiar with dilution ratios, %, PPM terms and how to apply the correct level of pesticide, you may find our plant science test kitchen blog on this topic of use here.
Chemical access and use should be restricted to employees familiar with their authorized application. PPE is very important to protect any employee that will come in contact with materials, liquids or vapors for chemical resources (gloves, boots, respirators, Tyvek (or equivalent protective wear) suits and eye protection or goggles.
For more detail on each of these treatments, you can see examples for your integrated pest management procedures in our complete white paper for Integrated Pest Management Recommendations, download the document here.
In our next chapter, Pest Population Control Actions, we will review control thresholds and example plans for a range of problems from biofilm build up to white flies and more. Our final chapter after that will suggest an emergency response framework and how to address pest outbreaks. See you next week.
This is the third in a series of articles designed to introduce an integrated pest management framework for cannabis cultivation facilities. To see Part One, click here. For Part Two, click here. Part Four comes out next week and covers direct control options for pest reduction. More to come!
This is Part 3: Preventive Measures
Preventive measures are a great investment in the profitability of your operations. Our objective is to ensure successful repeat harvests forever. Build your procedures with this in mind. This means maintenance and regular review. We all realize that this work can be monotonous drudgery (we know!), but these procedures will ensure your success.
Figure 1: New Air Shower Access Installation
As a summary to begin, pest access must be limited wherever possible. Employees are the first place to start, but we must also return to our site map and review our facility design and workflows. Every operation has to move plants from nursery through harvest and post-harvest. Where should cleaning happen? Of course, you have to clean up post-harvest but when should this occur during the grow cycle? What is the best way to monitor and clean environmental management systems (i.e. air, water) and what are the weaknesses in the physical barriers between operations? Let’s walk through these issues one-by-one.
Employee Access and Sterile Equipment
Follow procedures to screen and protect your employees both to eliminate pests and to avoid exposing your employees to harmful chemicals or storage areas. Look for ways to isolate your workflow from pest access. Be certain that your facility is airtight and sealed with filtration of molds, spores and live organisms in your air intake areas. Air showers at your access points are important to screen your employees on their way into your gowning areas and grow facility. Clothing should be standardized and shoe coverings or crocs should be provided for all employees that access your interior. Look for ways to stop all pests (embedded, crawling, hopping or flying) in all of your room assignments (mothers, clone, veg, flower, trim and drying). This can be improved with shoe baths, sticky mats, frequent hygiene (hand washing and cleaning stations) and procedures for entry.
Always consider requiring hair & beard nets, shoe covers and disposable gloves in plant sensitive areas.
Chemical Access & Protective Equipment
Figure 2: Example Facility Map – Understand Workflow & Barriers to Pest Access
Personal protection equipment (PPE) is very important to protect any employee that will come in contact with materials, liquids or vapors for chemical resources. Establish procedures for chemical use and train employees in the safe handling of these materials. Typical equipment includes high density chemical protective gloves, boots, respirators, Tyvek (or equivalent protective wear) suits and eye protection or goggles.
Chemical access areas and their use should be restricted to employees familiar with their authorized application. Always remember that cannabis is an accumulator plant, and it will absorb and hold onto chemical treatments. Appropriate isolation and safety procedures must be followed for chemical use. Not following these restrictions can expose your employees to dangerous chemicals or get your entire harvests rejected at testing.
Facility Map & Workflow
Because insects would like to be everywhere and they come in many types (root zone, crawling, flying, microscopic, bacterial or biofilm), the facility workflow must understand where they are and how they might migrate if they penetrate your defenses. Note airflows in your rooms and fan locations so migrations can be predicted once an infestation is located. Where are your opportunities for full clean-up and disaster recovery in your building? Where should you stage maintenance filters, test kits, water and cleaning materials. How best to clean up and dispose of sealed garbage containers or cleaning materials?
Operational Cleaning & Post-Harvest Reset
When compiling your preventative measure documents, it is critical to create a repeatable operating procedure for cleaning and sanitizing your rooms, systems, and growing spaces after each harvest. Plant material handling, cleaning surfaces and wipe methods should all be documented in your Standard Operating Procedures (SOPs). Define what “clean” is. Removing plants and plant debris is pretty clear but define how to drain reservoirs, clean pipes, change filters and clean and sterilize your rooms. Operators must be trained in these SOPs and reminded of their content on a regular schedule. This is how you avoid outbreaks that can crush your profits.
Physical Barriers & Maintenance
Figure 3: HVAC Air Filtration, Dehumidification, & Air Movement, Onyx Agronomics
Document your sealed spaces and define your normal room and access door barrier interfaces. Review the status of any known cracks or gaps in your perimeter. Are there any known leaks or piping that has been seen as a risk or a problem in the past? Are there any discoloring or resident mold locations (Never happens, right?). Baseline how much time and people resource a harvest operation and cleaning effort should take. Will you do this after every harvest or compromise your risk by delaying to every third or fourth harvest? Create your barrier SOP.
Environmental Control & HVAC
Managing the air quality provided to your plants is critical to your yields. Controlling CO2, air movement rates (the leaf happy dance), humidity, air filtration and sterilization methods must be maintained and cleaned on a regular basis. Do you need to change the HEPA or other particulate filters? Is there any UV light sterilization maintenance? We have all seen the home HVAC air conduit cleaning commercials. Your commercial facility is no different. How will you clean your air and water plumbing systems? How often will you perform this full reset? When will you calibrate and data log your sensors for temperature, humidity, CO2 and water resources? Put everything about your environmental set points into your maintenance document and decide when to validate these. Molds, mildews and biofilm hazards are all waiting for unmonitored systems to open the door for access.
In Conclusion, This Week
If you’re an IPM nerd and this dynamic topic did not put you to sleep, you can read more detail and examples for your integrated pest management procedures in ourcomplete white paper for Integrated Pest Management Recommendations, download the document here.
In our next chapter, Direct Control Options, we will review what you can use to protect or recover control of your facility including both chemical and non-chemical tools and methods. In our final two chapters, we will discuss extermination of the determined pests that breach your defenses. And with great expectations, our final chapter will discuss emergency response and time to go to war!
Part Four comes out next week. See you again soon!
This is the first part of a series of articles designed to introduce an integrated pest management framework for cannabis cultivation facilities. Part one details an overview of the plan as well as pest identification. Part two comes out next week and will delve into the world of pest monitoring and record keeping. Stay tuned for more!
Figure 1: Integrated Pest Management Cycle
Background
Integrated Pest Management (IPM) is a philosophy of pest prevention and control that integrates cultural, mechanical, physical and chemical practices to control pest populations within an acceptable degree of economic tolerance.
IPM encourages growers to take a step-wise approach to determine the most appropriate means necessary for avoiding pest-related economic injury through careful consideration of all available pest control practices.
When practicing IPM, less invasive non-chemical practices are given priority, until escalation necessitates otherwise.
This is Part 1: Pest Identification & Monitoring/Communications
Personal experience in a facility is a great place to start. Review your history and identify a list of pests that you have experienced in this or previous grows. Point out which pests currently exist where they were or are currently and possible sources of the contamination/infestation.
Figure 2: Healthy Aeroponic Mother Stock
Map out your facility with clear entry/exits, plumbing & drainage and air flow access to visually see and understand potential access points for crawling, flying or airborne pests.
From your nursery mother room to cloning and vegetation areas, what are the transfer methods as you move from one area to another. Are pests present in these areas? Where could they have come from? Oftentimes, a cultivator may not have the space for their own mother and cuttings/cloning space. In these cases, where did the outsourced clones come from? What are the IPM controls in place for these genetic sources? Are they carriers of the challenges transferred to your own facility? It is important to identify the possible source of pest potentials
Does your flower room have white flies or fungus gnats? Locating these and identifying the likely source is a good place to start if you have an ongoing infestation.
Figure 3: Example Aeroponic Facility Layout For IPM Planning
Powdery mildew is a routine challenge if air into your facility is not filtered and sterilized to eliminate these spores.
What is the Source of Your Irrigation/Fertigation Water?
Water is a crucial element for high-value indoor farms such as those that grow cannabis. However, water can also be a source of disease-causing microorganisms that can negatively impact the growth and yield of crops. Monitoring, filtering and sterilizing the biological contents of water is therefore crucial in ensuring the health and quality of high-value crops.
Unfiltered water can contain a range of pathogens such as bacteria, viruses, fungi and parasites that can cause root, stem and bud rot. These diseases can cause significant losses in crop yield and quality, which can be devastating for indoor farmers growing high-value crops.
Figure 4: Precision Aeroponics at FarmaGrowers GMP Facility, South Africa
Monitoring the quality of water that is brought into the indoor farm is the first step in ensuring that the water is free from harmful pathogens. This involves regular testing of the incoming water for parameters such as pH, dissolved oxygen, TDS, nutrient content and microbial load. This allows cultivators to identify aspects of the incoming water they need to address before the water is provided to their crops to prevent potential problems.
Is your plumbing building biofilm that is feeding into your irrigation lines? Obviously, there are many potential sources when you go through an inventory of the risks for your facility. From that initial step, you will build your management team and label who should be contacted when a pest is found. Do you have an IPM specialist or is this a resource that needs to be contracted to address an infection?
Building this communications tree is your first step to fewer pest issues and higher yields and potency.
For the complete white paper on Integrated Pest Management Recommendations, download the document here. Part two comes out next week and will delve into the world of pest monitoring and record keeping. Stay tuned for more!
This is the second piece in a two-part conversation with the founders of Veda Scientific, CEO Leo Welder and CSO Aldwin M. Anterola, PhD. To read part one, click here.
In part one, we chatted about their backgrounds, their approach to cannabis testing, their role in the greater industry and how they came into the cannabis industry.
In part two, we’re going down a few cannabis chemistry rabbit holes and realizing that what we don’t know is a lot more than what we do know. Join us as we delve into the world of volatile compounds, winemaking, the tastes and smells of cannabis, chicken adobo and much more.
Aaron: Alright so you mentioned the GCxGC/MS and your more advanced terpene analysis. How do you envision that instrument and that data helping your customers and/or the industry?
Leo: Some of the things that we envision will help is a better understanding of what compounds and what ratios will lead to desirable outcomes, things like better effects, aroma and flavor. By better understanding these things it’ll help the industry create better products.
I have a personal connection to this. My wife has some insomnia and she’s always had to take various forms of OTC pharmaceuticals to help with sleep. She tried using a 1:1 vape pen and it was a miracle worker for her for several months. The local dispensary had a sale on it, and she bought some extra. Unfortunately, even though she used it the same way as before, she got very serious anxiety, which obviously didn’t help her sleep. Every time she used the vapes from this same batch, she felt the same extreme anxiety. Sadly, she now had a lot of this product that she couldn’t use because it kept her awake rather than helping her sleep, so she went back to trying other OTC solutions. That’s a problem for both consumers and the industry at large. If people find something that works and provides a desired effect, they need to be able to rely on that consistency every time they purchase the product, leading to similar outcomes and not exaggerating the problem. That’s why I think consistency is so important. We’re taking two steps forward and one back when we have inconsistent products. How do we really grow and expand the availability of cannabis if we lose trust from our consumer base? What a lab can do and what we can do is provide data to cultivators and manufacturers to create that consistency and ultimately allow the market to expand into other demographics that are currently wary and less tolerant of that variance.
Vials of cannabis samples being prepped for collaborative research with the CESC
On a similar note, we have been having a lot of discussions with the CESC [Clinical Endocannabinoid System Consortium] down in San Diego. They are an advanced cannabis research group that we have been working with for over a year. We’ve started looking at the idea of varietals. To be more specific, because I’m not a wine connoisseur, varietals are the pinot noirs, the cabernets and sauvignon blancs of the industry. In the cannabis industry, consumers have indica and sativa, though we still argue over what that concept really means, if anything. But for the sake of argument, let’s say we have this dichotomy to use as a foundational decision tool for consumers- call it the red and white wine of the cannabis industry. How inaccessible would wine be if we just had red or white? Imagine if you went to a dinner party, really liked the wine you were drinking, and the host could only tell you that it was a red wine. You can’t go to a wine store and expect to find something similar to that wine if the only information you have is “red.” At a minimum, you need a category. So that’s what varietals are, the categories. The data that we can produce could help people in the industry who identify and establish the varietals based on their expertise as connoisseurs and product experts to find what those differences are chemically. Similarly, we’re also looking at appellation designations in California. So, we want to help provide tools for farmers to identify unique characteristics in their flower that would give them ability to claim and prove appellation designation.
Aldwin: The GCxGC/MS allows us to find more things besides the typical terpene profile with 20 or 40 terpenes. It allows us to go beyond those terpenes. The issue sometimes is that with a typical one-dimensional GC method, sure you could probably separate and find more terpenes, but the one dimension is not enough to separate everything that coelutes. And it’s not just terpenes. Some terpenes coelute with one another and that’s why people can see this inconsistency. Especially if you use a detector like an FID, we can see the compound limonene on the chromatogram, but there’s another terpene in there that is unknown that coelutes with limonene. So, this instrument is helping us get past the coeluting issue and solve it so that we know what peaks represent what terpenes.
The other bonus with our GCxGC/MS is that the coeluting compounds that were masked behind other terpenes are now revealed. There is a second dimension in the chromatogram where we can now detect some compounds in cannabis that would be hiding behind these large peaks if it were just a one-dimensional GC. Besides terpenes, we’ve found esters, alkanes, fatty acids, ketones, alcohols and aldehydes, as well as thiols. The terpenes are so plentiful in cannabis that these other compounds present at lower levels cannot be seen with just one-dimensional GC. There are just so many compounds in cannabis that the ones in small amounts are often masked. My analogy to highlight the importance of these minor compounds is like a dish; I am from the Philippines and I like chicken adobo. My father does it differently from my mom and someone else will do it differently in a different region. The base of the sauce is vinegar and soy sauce, but some people will do it differently and maybe add some bay leaf, garlic, pepper, or a touch of another spice. It’s still chicken adobo, but it tastes differently. Just like in cannabis, where yes, you have the same amount of THC in two different plants, but it’s still giving you a different experience. Some people say it’s because of terpenes, which is true in a lot of cases, but there are a lot of other volatile compounds that would explain better why certain dishes taste different.
2-D chromatogram showing four peaks separated by the GCxGC. With a traditional 1-D chromatogram, these peaks would coelute and not separate.
Leo: There’s been some recent developments too here that show it’s very significant. It’s like the difference between bland and spicy. And it could be the thiol. We identified a thiol in cannabis at the same time as other scientists reported an article that just came out on this subject.
Aldwin: Thiols are sulfur containing compounds that produce very powerful odors, giving cannabis the skunky smell. Skunks also produce thiols. It is very potent; you only need a little bit. It turns out that yes, that paper described thiols and we also saw them in our GCxGC/MS. These are the kinds of things that the GCxGC can show you. Those very tiny amounts of compounds that can have a very powerful impact. That’s one that we know for sure is important because it’s not just us that’s finding out that GCxGC can detect this.
Not everything is about THC or the high amount of the compounds in the flower. This paper and our concurrent findings indicated that the skunkier smelling strains contained very small amounts of thiols and you can recognize their presence quite readily. It’s not a terpene, but it’s producing a distinct flavor and a powerful smell.
Aaron: Okay, so why is this useful? Why is it so important?
Leo: I would say two things in particular that we know of that are issues currently, both related to scents. We mentioned this earlier. We do know that farmers with breeding programs are trying to target particularly popular or attractive scent profiles, whether it be a gas or fruity aroma. Right now, when they get the flower tested and review the terpene profile, it isn’t enough information to help them identify what makes them chemically distinct. We hear time and again that farmers will say their terpene profile is not helpful in identifying specific scents and characteristics. They are looking for a fingerprint. They want to be able to identify a group of plants that have a similar smell and they want a fingerprint of that plant to test for. Otherwise, you have to sniff every plant and smell the ones that are most characteristic of what they’re targeting. For larger operations, walking through and smelling thousands of plants isn’t feasible.
Once we can identify that fingerprint, and we know which compounds in which ratios are creating the targeted aroma, we can run tests to help them find the best plants for breeding purposes. It’s about reproducibility and scalability.
Another value is helping people who are trying to categorize oils and strains into particular odor categories, similar to the varietals concept we’ve been talking about. Currently, we know that when manufacturers send multiple samples of oils with the same or similar scent to be tested, the results are coming back with significantly different terpene profiles. There is not enough data for them to chemically categorize products. It’s not that their categories are wrong, it’s just that the data is not available to help them find those boundaries.
Those are two issues that we know from conversations with customers that this particular piece of equipment can address.
Aldwin: Let’s start from what we find, meaning if you are using the GCxGC/MS, we are finding more terpenes that nobody else would be looking at. We have data that shows, for example, that certain standards are accounting for 60% or so of total terpene content. So a large percent is accounted for, but there is still quite a bit missing. For some strains there are terpenes that are not in common reference standards. Being able to know that and identify the reason why we have different terpenes in here unaccounted for is big. There are other things there beyond the standard terpenes.
Dr. Anterola working with the GCxGC/MS
What excites me sometimes is that I see some terpenes that are known to have some properties, either medical or antibacterial, etc. If you find that terpene looking beyond the list, you’ll find terpenes that are found in things like hardwood or perfumes, things that we don’t necessarily associate with the common cannabis terpenes. If you’re just looking for the limited number of terpenes, you are missing some things that you might discover or some things that might help explain results.
Leo: It’s also absolutely necessary for the medical side of things. Because of the federal limitations, cannabis hasn’t been researched nearly enough. We’re missing a lot of data on all of the active compounds in cannabis. We are finally starting to move into an era where that will soon be addressed. In order for certain medical studies to be successful, we need to have data showing what compounds are in what plants.
Drs. John Abrams and Jean Talleyrand of the CESC launched the Dosing Project in 2016. They have been studying the impact of cannabis flower for indications such as pain mitigation and sleep improvement, and now more recently mood, and appetite modulation. They categorize the THC & CBD content as well as flower aroma into 3 cannabinoid and 3 odor profiles. They are able to acquire quite a bit of data about how odor correlates with the outcomes. Because they were initially limited in terms of underlying natural product content data, they contacted us when they found out we acquired this equipment in 2020, and have stated that they are certain the data we will now be producing will take their research to the next level of understanding.
Aldwin: For quality control you are looking at specific things that would reflect properties in cannabis. There should be a 1:1 correspondence between properties observed and what we are measuring. The current assumption is that the terpenes we are looking at will tell us everything about how people would like it, with regards to flavor and smell preference. But we know for a fact that the limited terpenes most labs are measuring do not encapsulate everything. So, it is important for QC purposes to know for this particular strain or product, which everyone liked, what is it in there that makes everybody like it? If you just look at the typical terpene profile, you’ll find something close, but not exact. The GCxGC/MS shows us that maybe there’s something else that gives it a preferred property or a particular smell that we can explain and track. In one batch of flower, the consumer experiences it a certain way, and for another batch people experience it another way. We’d like to be able to understand what those differences are batch to batch so we can replicate the experience and figure out what’s in it that people like. That’s what I mean by consistency and quality control; the more you can measure, the more you can see.
Aldwin: Speaking to authenticity as well, in a breeding example, some growers will have this strain that they grew, or at least this is what they claim it to be, but what are the components that make those strains unique? The more analytes you can detect, the more you can authenticate the plant. Is this really OG Kush? Is this the same OG Kush that I’ve had before? Using the GCxGC/MS and comparing analytes, we can find authenticity in strains by finding all of the metabolites and analytes and comparing two strains. Of course, there is also adulteration- Some people will claim they have one strain that smells like blueberries, but we find a compound in it that comes from outside of cannabis, such as added terpenes. Proving that your cannabis is actually pure cannabis or proving that something has added terpenes is possible because we can see things in there that don’t come from cannabis. The GCxGC/MS can be used as a tool for proving authenticity or proving adulteration as well. If you want to trademark a particular strain, we can help with claiming intellectual property. For example, if you want to trademark, register or patent a new product, it will be good to have more data. More data allows for better description of your product and the ability to prove that it is yours.
Leo: One thing that I think is a very interesting use case is proving the appellations. It is our understanding that California rolled out a procedure for growers to claim an appellation, but with strict rules around it. Within those rules, they need to prove uniqueness of growing products in specific regions. The GCxGC/MS can help in proving uniqueness by growing two different strains in two different regions, mapping out the differences and seeing what makes a region’s cannabis unique. It’s valuable for growers in California, Oregon, Colorado to be able to prove how unique their products are. To prove the differences between cannabis grown in Northern California versus plants grown along the Central Coast. And of course, for people across the world to be able to really tell a story and prove what makes their cannabis different and special. To be able to authenticate and understand, we need to have more comprehensive data about properties in those strains. It could be terpenes, it could be esters or thiols. That’s what we’re excited about.
Aaron: From your perspective, what are some of the biggest challenges and opportunities ahead for the cannabis industry?
Aldwin: Getting ready for federal legalization is both a challenge and opportunity. A challenge because when it is federally legal, there will be more regulations and more regulators. It is also a challenge because there will be more businesses, more competition, that might get into the industry. It is opening up to other players, much bigger players. Big tobacco, mega labs and massive diagnostic testing companies might participate, which will be a challenge for us.
But it’s also an opportunity for us to serve more customers, to be more established at the federal level, to move to interstate commerce. The opportunity is to be ready here and now while other people are not here yet.
Another challenge and opportunity is education. Educating consumers and non-consumers. We have to realize and accept that cannabis is not for everybody, but everyone is a stakeholder, because they are our neighbors, parents or part of the medical establishment. It would be a disservice not to educate the non-consumers.
The medical establishment, they don’t have to be consumers but they need to know about cannabis. They don’t know as much as they should about cannabis and they need to know more, like how it could affect their patients for better or for worse, so they know how to help their patients better. There could be drug interactions that could affect the potency of other drugs. They need to know these things. Educating them about cannabis is a challenge. It’s also an opportunity for us to now come in and say that cannabis is here to stay and be consumed by more and more people, so we better know how to deal with it from a medical perspective.“This bucking bronco of a growth style will throw a lot of people off. We need to figure out what we can grab on to and ride out these waves.”
Law enforcement needs to be educated too. What THC level in the blood indicates impairment? It is still a challenge because we’re not there yet, we don’t have that answer quite yet. And it’s an opportunity to help educate and to find more answers for these stakeholders, so we can have regulations that make sense.
Leo: To Aldwin’s point, the biggest opportunity comes along with federal legalization as well as expanding the customer base beyond the traditional market. Since adult use was legalized in CA, we haven’t yet seen the significant expansion of the consumer population. We’re primarily seeing a legal serving of the market that already existed before legalization.
The reality is cannabis can be used in different ways than what we think of. We know it has medical benefits and we know it is enjoyed recreationally by people looking for high THC content and the highest high. But there is also this middle ground, much like the difference between drinking moonshine and having a glass of wine at dinner. The wine at dinner industry is much bigger than the mason jar moonshine industry. That’s really where the opportunity is. What’s the appeal to the broader market? That will be a big challenge, but it’s inevitable. It comes from everything we’ve talked about today, consistency in products, educating people about cannabis, normalizing it to a certain degree, varietals and appellations.
As an entrepreneur, I’m looking at this from a business perspective. Everyone talks about the hockey stick growth chart, but it is a very wavy hockey stick. I expect to see very significant growth in the industry for a while, but it will have a lot of peaks and valleys. It’ll essentially be whiplash. We are seeing this in California right now, with sky high prices in flower last year down to bottom of the barrel prices this year. We have to all figure out how to hang on. This bucking bronco of a growth style will throw a lot of people off. We need to figure out what we can grab on to and ride out these waves. The good ones will be fun and the bad ones will be painful and we know they are coming again and again and again. That’s the biggest challenge. People say ‘expect tomorrow to look a lot like today,’ but you really can’t expect tomorrow to look anything like today in the cannabis industry. Tomorrow will be totally different from today. We need to figure out, within all this chaos, what can we hang on to and keep riding the upward trajectory without getting thrown off the bronco.
Leo Welder, CEO of Veda Scientific, founded the business with Aldwin M. Anterola, PhD in July of 2019. A serial entrepreneur with experience in a variety of markets, he came to the industry with an intrigue for cannabis testing and analysis. After teaming up with Dr. Anterola, co-founder and chief science officer at Veda Scientific, they came together with the purpose of unlocking possibilities in cannabis. From the beginning, they set out with a heavy scientific interest in furthering the industry from a perspective of innovation and research.
Through discussing their clients’ needs and understanding their complex problems, the two realized they wanted to start a lab that goes well beyond the normal regulatory compliance testing. Innovation in cannabis looks like a lot of things: new formulations for infused products, better designs for vaping technology or new blends of genetics creating unique strains, to name a few. For the folks at Veda Scientific, innovation is about rigorous and concentrated research and development testing.
With the help of some very sophisticated analytical chemistry instruments, their team is working on better understanding how volatile compounds play a part in the chemometrics of cannabis. From varietals and appellations to skunky smells, their research in the chemistry of cannabis is astounding – and they’ve only begun to scratch the surface.
In this two-part series, we discuss their approach to cannabis testing, their role in the greater industry as a whole and we go down a few cannabis chemistry rabbit holes and find out that what we don’t know is a lot more than what we do know. In part one, we get into their backgrounds, how they came into the cannabis industry and how they are carving out their niche. Stay tuned for part two next week where we delve deep into the world of volatile compounds, winemaking, the tastes and smells of cannabis and chicken adobo.
Aaron G. Biros: Tell me about how you and your team came to launch Veda, how you entered the cannabis space and what Veda’s approach is to the role of testing labs in the broader cannabis industry.
Leo Welder, CEO of Veda Scientific
Leo Welder: I’m an entrepreneur. This is my third significant venture in the last fifteen years or so. So, I was intrigued by cannabis legalization broadly, because it is such a unique time in our history. I was always interested in participating in the industry in some way, but I didn’t see where would be a good fit for me. I used to meet monthly with a group of friends and fellow entrepreneurs for dinner and discussions and one member started working on the software side of the industry. He mentioned the testing element of cannabis in one of our meetings. I latched on to that and was intrigued by the concept of testing cannabis. I began to research it and found the role that testing plays in the cannabis industry is really significant. I found out that regulators rely pretty heavily on labs to make sure that products are safe, labels are accurate and that consumers have some protections. So, I thought that this is a space that I thought I could really find a calling in.
So, from that point I knew I needed to find a subject matter expert, because I am not one. I have business skills and experience in some technical fields but I am not a cannabis testing expert by any means. So, with that I started to look at a few different markets that I thought may have opportunity for a new lab, and I came across Aldwin’s business; he had a cannabis testing lab in Illinois at that time. I reached out to him, talked to him about my vision for the space and his thoughts and his vision and we really started to come together. From there, we researched various markets and ultimately chose to approach Santa Barbara County as our first foray together into the cannabis testing market.
Aldwin M. Anterola: As Leo mentioned, he was looking for a subject matter expert and I am very much interested in plant biochemistry. Which means I like to study how plants make these compounds that are very useful to us. For my PhD [in plant physiology], I was studying how cell cultures of loblolly pine produce lignin. Our lab was interested in how pine trees produce lignin, which is what makes up wood. Wood comes from phenolic compounds. You’ve probably heard of antioxidants and flavonoids – those are phenolic compounds. After my PhD, I wanted to do something different so I decided to work with terpenes.
I picked a very important terpene in our field, an anti-cancer compound called Taxol, produced from the bark of the yew tree. You have to cut trees to harvest it. We have ways of synthesizing it now. But at that time, we were trying to figure out how the tree produces that terpene. Of course, I’m interested in any compound that plants make. My interest in terpenes led me to cannabinoids which turn out to be terpenophenolics, thus combining the two interests in my professional field.
Aldwin M. Anterola, PhD, Co-Founder and Chief Science Officer at Veda Scientific,
So that’s the scientific and intellectual side of why I became interested in cannabis, but practically speaking I got into cannabis because of a consulting offer. A company was applying for a cultivation license, wanted to have a laboratory component of their business in their application, and hired me to write that part of their application. I was very familiar with HPLC, and had a GC/MS in the lab. I also have a background in microbiology and molecular biology so I can cover every test required at that time, and I knew I could research the other analytical techniques if necessary.
So, they did not get the license, but I figured I’d take what I wrote, once I received permission, and set up an independent laboratory together. But it’s hard to run a lab and be a professor at the same time. Also, the busines side of running a lab is something that I am not an expert in. Fortunately, Leo found me. Before that, I really got excited about this new industry. The concept of cannabis being now accessible to more people is so interesting to me because of how new everything is. I wanted to be involved in an industry like this and help in making it safe while satisfying my curiosity in this new field of research. As a scientist, those are the things that excite us: the things we didn’t have access to, we can now do. It opens up a whole new room that we want to unlock. It was my intellectual curiosity that really drove me. This opened up new research avenues for me as well as other ventures if you will. How can I be more involved? I thought to myself.
SIU boasts an impressive cannabis program, thanks largely to Dr. Anterola’s work there.
Back in 2014, I introduced cannabis research to our university [Southern Illinois University] and set up an industrial hemp program, which was DEA-licensed I gathered faculty that would be interested in studying hemp and cannabis and we now have a whole cannabis science center at the university. I teach a course in cannabis biology and because I also teach medical botany to undergraduate students, I was able to introduce [premed] students to the endocannabinoid system. Anyway, I can go on and on.
Outside of that I became involved with the AOAC and ASTM, and became a qualified assessor for ISO 17025:2017. I have been a member of the American Chemical Society since 2000 but there were no cannabis related activities there yet until relatively recently. But when they had the new cannabis chemistry subdivision, I am happy to participate in there as well . There are many avenues that I took to begin dabbling with cannabis, be it research, nonprofits, teaching, testing and more. Cannabis has basically infiltrated all areas of what I do as an academic.
Leo: I read his resume and I was like this is the guy! So back to your question, what’s Veda’s role as a testing lab in this space? What are we trying to build? We spent a lot of time trying to figure out what we wanted to be in this space. We came to understand that labs are not the tip of the spear for the market; that would be the growers, the retailers and the processors. We are a support, a service. We see ourselves as a humble, but competent guide. We provide the data for the tip of the spear, the people pushing the industry forward with support, data and the services to make sure they have the tools they need to build these great companies and great products with good cultivation practices and more, leading everyone to the next level of the cannabis industry. Our job is to support innovation, to provide quality compliance testing, to of course ensure safety, while also providing great R&D to these innovative companies.
Aldwin: I’d like to add a bit to that thought. Okay so that’s who we are, but what are we not? Because as Leo said I had a testing lab before we met [Advanced Herbal Analytics]. From there, I approach it as safety testing, making sure that before it gets to the end consumer, we are sort of like gate keepers keeping consumers safe. That’s one side to it, but we are not the people who are trying to make sure that none of the products get to the market. For some, that’s how we’re treated as.
People often look at testing labs like the police. We are not the people trying to limit products to market. Our approach is not to find faults. There is another way of being a testing lab that is less about finding faults in products and more about finding uniqueness. What makes your product different? With this new approach, we are much more focused on helping the best products make it to the shelves.
Aaron: Given that all state licensed labs have to provide the same tests as the other labs in that state, how does Veda differentiate itself?
Leo: Location was the first thing. We picked Santa Barbara County intentionally. We knew that some of the biggest operators, some of the most forward-thinking innovators were setting up shop here. Looking down the road, not just this year or next year but very long term, we wanted to start building a great, sustainable company. We wanted to build a brand that those kinds of companies would be receptive to. Building better and greater products. There’s one other lab in the county and that’s it. Whereas there are clusters of labs in other parts of the state. Part of the draw to Santa Barbara for us was that it is such a small, tight-knit community. We have worked very hard to build relationships in our community and to understand their challenges, helping them however we can.
Location and relationships. Getting to know the challenges that different size customers face, be it our greenhouse customers versus outdoor customers, or large-scale operations versus smaller manufacturing operations, the challenges are all different. Some people care about turnaround times, some more about R&D. If we understand our client’s problems, then we can provide better service. We see ourselves as problem solvers. We lean heavily on our technical team members like Aldwin, who not only have tremendous amounts of experience and education, but also great networks to utilize when a customer needs help, even when it falls outside of our local expertise.
The GCxGC/MS instrument, used for Veda’s advanced R&D testing
Last but certainly not least is the advanced R&D testing that we do. When we first started, we started talking to farmers and manufacturers trying to understand their challenges. What data were they not getting? How would a testing lab better serve them? So, we started investing strategically in certain instruments that would allow us to better serve them. We’ll get into this later as well, but we invested in a GCxGC/MS, which allows us to get more visibility into things beyond the typical panels, like more terpenes and other volatile compounds including thiols and esters. We did that because we knew there is value in that. The data our customers were getting prior just wasn’t enough to put together really great breeding programs or to manufacture really consistent products, you know, to move toward that next level of innovation in the industry.
Aldwin: Leo mentioned advanced R&D and it’s basically the same approach that I mentioned before. It’s not just telling you what you can and cannot do. It’s about asking them what do you want to do and what do you want from a lab? If we have a problem, let’s see if we can solve it. That’s how the GCxGC/MS came into play because we knew there was a need to test for many terpenes and other volatile compounds. The common complaint we received was why two terpene profiles differ so much from each other, even from the same genetics.
This is something that would actually give the customer, the cultivator or the manufacturer: data about their product that they can actually use. For consistency, for better marketing and other reasons. We are trying to help them answer the questions of ‘how can I make my product better?’
You know, for example, clients would tell us they want something that has a specific taste or smells a certain way. Nobody is telling them what makes the flavor or smell. There is a need there that we can fill. We are trying to provide data that they, the customers, need so that they can improve their breeding programs or their formulations. Data they can use, not just data they need in order to comply with regulations. They would ask us what we can do. We listen to our customers and we try and help as best we can. We don’t know every answer. We are discovering there is a lot more to terpenes than what you can find on a traditional one dimensional gas chromatogram. Some of the terpene data that our clients had previously is not really actionable data, which is where the GCxGC/MS is helping us.
In part two, we delve deep into the world of volatile compounds, winemaking, the tastes and smells of cannabis and chicken adobo. Click here to read part two.
Two decades ago, California became the first state to legalize the medical use of cannabis. In 2021, medical use of cannabis is legal is 36 US states, and 17 states allow adult (‘recreational’) use. This trend of rapid legalization of the cannabis industry, while encouraging for industry growth, attracts more attention from federal regulatory bodies such as the Occupational Safety and Health Administration (OSHA). Following a number of incidents and near misses, cannabis facilities have been increasingly frequented by OSHA visits, leading to a spike in citations and fines. A review of past OSHA citations reveals that the most common citations in the cannabis industry pertains to the employer’s lack of awareness about the hazardous nature of some operations and materials handled in the facility. This leads to an absence of a formal fire prevention plan, lack of proper hazardous chemical training, deficiency in proper documentation related to workplace injury and limited evaluation of required personal protective equipment (PPE).1
Cannabis industry data suggests that as of today, an incident is often followed by an OSHA inspection. This naturally leads to the facility asking, ‘How do we prepare for an OSHA inspection and prevent future citations?’ The answer is a combination of identifying and mitigating risks in advance to avoid incidents and developing management systems that support the identification and risk mitigation efforts. Recent collaboration between cannabis business owners and organizations that write codes and standards have provided a framework in which to address the industry’s unique safety challenges to help reduce inherent risk to a facility. These codes and standards typically impact building construction/safety features and operation of the facility, however, additional risk mitigation can be drawn from the best practices already in place in process industries with similar hazards. These process industries have embraced process safety management (PSM) programs, which are built around principles flexible enough to be successfully implemented in the cannabis industry. Adopting such programs will serve the dual purpose of improving the overall safety record of the cannabis industry while enhancing company sustainability2 and help avoid events that lead to OSHA citations.
Figure 1. Risk Based Process Safety Management System
The risk-based process safety (RBPS) approach developed by the Center for Chemical Process Safety (CCPS)3 may prove to be the most effective framework to implement PSM programs in the cannabis industry. Unlike the prescriptive regulatory approach provided by OSHA 29 CFR 1910.119, the RBPS methodology recognizes that not all hazards and risks are equal. By assessing risk, an organization can develop an effective management system that will prioritize allocation of limited resources to address the highest risks. Figure 1 shows the four foundational blocks (pillars) of RBPS and the various elements that make up each pillar.
If a cannabis business owner were to develop programs on each of the pillars presented in Figure 1, a comprehensive safety program would be in place that delivers sustainable risk reduction and mitigation. However, as with any industry, the elements can be prioritized and tackled over time, starting with the elements having the most influence on the overall safety of a given facility. For example, a given facility may have great procedures and practices, but may not consistently train or instill employee knowledge or competency. Conversely, a facility may have personnel with great knowledge of hazards and risks, but are less developed with regard to documenting procedures, safe practices or training for new hires. Focusing available resources on the less developed elements will lead to an overall improvement in facility risk, leading to a lower likelihood of an incident and OSHA inspection.
Figure 2. Still image from surveillance video of an explosion at New MexiCann Natural Medicine in July 2015.
As with any industry, positive and negative public perception is driven by the media, which tends to focus on attention-grabbing headlines. The majority of past incidents reported in the news for the cannabis industry were explosions that occurred during the extraction process. One such extraction explosion, shown in Figure 2, occurred in July 2015 at the New MexiCann Natural Medicine facility in Santa Fe, New Mexico. With a focus on the ‘hazard identification and risk analysis’ pillar of RBPS, future such events may be mitigated.
Of the twenty RBPS elements, hazard identification and risk analysis (HIRA) stands out as having the highest potential for immediate impact on the cannabis industry’s safety profile.
HIRA is a collection of activities carried out through the life cycle of a facility to ensure that the risks to employees and the public are constantly monitored to be within an organization’s risk tolerance. The four major areas to analyze are:
Hazards – What are the possible deviations from the design intent?
Consequences – What are the worst possible consequences (or severity) if any deviation occurs?
Safeguards – Are there safeguards in the system to reduce the likelihood of this event?
Risk – Is the risk within the tolerable level? If not, what steps are needed to reduce the risk? (Severity X Likelihood = Risk)
Figure 3. A simplified HIRA flow chart for an Extraction Process
Let us consider an example case where the extraction process utilizes propane or butane as the extracting solvent. Figure 3 shows a simplified HIRA flow chart for the extraction process.
This systematic approach helps to understand the hazards and evaluate the associated risk. In addition, this approach highlights operator training as a crucial safeguard that can be credited to lower the overall risk of the extraction facility. Remember, lack of proper safety training (another element!) is one of the most cited OSHA violations in the cannabis industry. Another advantage to the HIRA methodology is that other safeguards that may be present can be identified, their effectiveness evaluated and additional risk reduction measures may be recognized. This will help business owners allocate their limited resources on the critical safeguards that provide the greatest risk reduction. Identifying, analyzing and solving for potential hazards is a key step in safe operation of a facility and avoiding OSHA citations.
While this article discusses only a single RBPS element, this example demonstrates how best practices from process industries can become a powerful tool for use in the cannabis industry. The “hazard identification and risk analysis” element of the RBPS approach is pertinent not only for the extraction process as discussed above, but also directly applicable to other aspects of the industry (e.g., dust explosions in harvesting and processing facilities, toxic impacts from fertilizers, hazards from the CO2 enrichment process in growing facilities, etc.).
Freya Farm, a pesticide-free cannabis producer and processor located in Conway, Wash., was recently forced to issue a recall after the chemical o-Phenylphenol, listed under CA Prop 65, was found on its products. Testing traced the antimicrobial compound, known to cause cancer, back to the FDA-compliant food grade gloves used by Freya during packaging.
The reason this could happen with FDA-compliant, food grade gloves needs urgent attention. The production and manufacturing of food contact gloves is largely unsupervised, with limited and infrequent checks on gloves imported into the US. After initial approvals, non-sterile, FDA-compliant food grade gloves are not subject to ongoing controls. This may lead to lower grade and cheap raw materials being used in sub-standard production facilities and processes.
Why “Food Safe” Gloves Aren’t Always Safe
The quality and safety of disposable gloves are limited to Letters of Compliance and Guarantee on the general make and model of the glove, not necessarily the glove you are holding in your hand. There are few controls on the consistency of raw materials, manufacturing processes and factory compliance for both food contact and medical examination grade gloves. Therefore, the opportunity exists for deliberate or accidental contamination within the process of which the Preventive Controls Qualified Individual (PCQI) may not be aware.
In the words of Freya Farm, “Nothing ruins your day like testing your product, confident it will be clean, only to find it contaminated with some crazy, toxic chemical.” In tracing the issue, the gloves were the last thing Freya Farm tested, as they never suspected something sold as food safe could be the culprit.
A recall of this type can be expensive, as fines range up to $200,000. Since this incident, Freya Farm has implemented a responsible sourcing policy for gloves using supplier Eagle Protect to protect its products, people and brand reputation.
Glove inspection includes five factors of quality controls
Eagle Protect, a global supplier of PPE to the food and medical sectors, is currently implementing a unique proprietary third-party glove analysis to ensure a range of their gloves are regularly checked for harmful contaminants, toxins and pathogens. This Fingerprint Glove Analysis mitigates the risk of intentional or accidental physical, chemical or microbiological glove contamination by inspecting five factors: the use of safe ingredients, cross-contamination potential, cleanliness, structural integrity and dermal compatibility.
Harmful toxins and contaminants in gloves have been identified in many peer reviewed scientific studies. This is now a real issue for companies producing consumer products, especially in industries such as organics and cannabis whose products must be handled by gloves and test clean.
Three key areas that can be tested for in a glove analysis to ensure safe product handling include:
Dermal compatibility tests for toxins and chemicals will flag any toxic chemical, such as o-Phenylphenol
GCMS testing for consistent quality and safety of glove raw materials
Cleanliness tests for pathogens inside and outside the surfaces of gloves – particularly pathogens also required in cannabis testing, such as E. coli and Salmonella, mold and fungus and pesticides.
For cannabis producers responsible glove sourcing is vital, especially as the COVID-related demand for single-use gloves exceeds supply, with poor quality, counterfeit and even reused gloves flooding the market. For producers with a product that rests very much on its quality, it’s important to focus on quality and not just cost when procuring gloves.
According to a press release, Shimadzu Scientific Instruments and Front Range Biosciences (FRB) announced a partnership where they will establish the FRB Hemp Science Center of Excellence. The center will focus on genetics, biobanking, breeding and analysis, all with Shimadzu instrumentation. The center will host scientists performing chemical and genetic analytical research to “support the development of new hemp varieties for the production of cannabinoids, terpenoids and other compounds for medical and wellness applications; lipid, wax and protein ingredients for food and cosmetics applications; and fiber for industrial applications.”
Dr. Jon Vaught, CEO of Front Range Biosciences
Located at FRB’s new headquarters in Boulder, CO, the new center will allow for collaborative efforts between researchers from the public and private sectors like academic, nonprofit and government agencies. The center will expand FRB’s collaboration with the University of Colorado at Boulder. Researchers at other institutions can apply for grants to support students, postdoctoral candidates and other researchers at the new center.
Dr. Jonathan Vaught, CEO of FRB, says they’re honored to work with Shimadzu and their instrumentation. “Front Range Biosciences is honored to partner with the world-class team at Shimadzu. Combining their innovative and proven cannabis and hemp analytical instrumentation solutions with our next-generation breeding program, we will be well positioned to continue advancing the industry with data-driven science so we can harness the incredible potential of this versatile plant for therapeutic, wellness, nutrition and industrial applications,” says Dr. Vaught. “We are confident that with Shimadzu’s cutting-edge technology, we will be able to drive forward-thinking solutions in this growing industry to better serve farmers, producers and consumers.”
The e-cigarette or vaping use-associated lung injury (EVALI) outbreak of 2019 caught the attention of many, and has brought with it the scrutiny of both regulators and plaintiffs’ attorneys eager to act as “civil prosecutors.” As Tolkien would say, the Eye of Sauron has now turned its gaze towards the cannabis vapor industry.
With the misinformation and negative publicity that the EVALI outbreak brought to the industry, vaporizer device manufacturers should expect more lawsuits to be filed against them through 2020 and beyond. The cannabis vapor industry should also expect the theories of defect alleged against their products to become more sophisticated as more plaintiffs’ attorneys enter the arena.
One theory of defect you should expect plaintiff’s attorneys to pursue in 2020 is what I generally refer to as “temperature control litigation.”
These pre-filled cartridges are compatible with just about any battery because of the universal 5/10 thread connectors.
Here is the problem:
Typical additives in cannabis oil, while once thought to be safe, can degrade at higher temperatures into toxic chemicals. For example, the Vape Crisis of 2019 was largely attributed to a cannabis oil additive known as vitamin E acetate. While typically regarded as safe for use in nutritional supplements or hand creams, when used in cannabis oil, investigators believe vitamin E acetate can degrade into a toxic chemical when vaped—and is responsible for causing mass pulmonary illness for thousands of consumers.
Researchers do not fully understand how this process occurs, but chemists from the Royal College of Surgeons in Ireland found in a recent study that the key is understanding how temperatures affect chemicals when vaping. Through a process known as pyrolysis, the study found that vitamin E acetate can possibly degrade into ketene when vaped at higher temperatures—depending on the type of coil resistance, voltage and temperature configuration used in a vaporizer device. (Ketene has a high pulmonary toxicity, and can be lethal at high concentrations, while low concentrations can cause central nervous system impairment.) Similar studies have also shown that additives like Propylene Glycol (PG), Vegetable Glycerin (VG), and Polyethylene Glycol (PEG) can degrade into toxic chemicals at high temperatures—which has led Colorado to ban the use of PEG for inhalable cannabis products altogether.
More shocking, is that such temperature control issues are not limited to additives. It is very common for experienced users to experiment with low to high temperatures when vaping cannabis; it is believed that vaping cannabis at low temperatures (325-350°F) results in a mild high, while vaping cannabis at higher temperatures (400-430°F) results in a more euphoric feeling and intense high. But when cannabis is vaped at even higher temperatures (450°F +), industry experts do not really know if or how cannabinoids and terpenes degrade, which combinations of cannabinoids and terpenes affect degradation and what the health risks could be. It’s anyone’s guess.
Cheap batteries with the universal 5/10 thread can heat the product at inconsistent temperatures, raising safety and quality concerns
These temperature control issues are further complicated due to the universal 5/10 thread. Most consumers purchase cannabis oil through pre-filled “carts” (cartridges)—that are compatible with 90% of vaporizer batteries on the market because of universal 5/10 thread connectors. But vaporizer batteries can operate anywhere from sub-300 degrees to 800 degrees and above. Coupled with varying battery voltages, ceramic coil quality and oil quality, vaporizer batteries can produce a wide range of operating temperatures. Consequently, it is possible users could connect a cart to a vaporizer battery (set at too high a temperature configuration) and risk pyrolysis, change the chemicals inside their cannabis cart, and cause unknown harm to themselves.
Unquestionably, all of the above will result in lawsuits. Companies that manufacture cannabis oil will be sued for failing to conduct emissions testing to properly evaluate safe temperature settings for use of their carts. Vaporizer device manufacturers will be sued for failing to publish warnings, instructions and adequate owner’s manuals regarding the same. And the rallying cry against the cannabis vapor industry will be damaging. Plaintiff’s attorneys will accuse the industry of choosing profits over safety: “The cannabis vapor industry knew cannabis oils could turn into toxic chemicals when heated at high temperatures, but instead of conducting long-term emissions testing to evaluate those concerns, the industry chose profits over safety. As long as the industry made money, no one cared what dangers arose from elevated temperatures—and consumers paid the price.”
With the above as background, it is critical for the cannabis vapor industry to get serious about product testing. The industry needs to know if and why certain cannabinoids, terpenes and additives can turn into toxic chemicals when they are vaporized at high temperatures—and how the industry can guard against such dangers. And to cover their bases, the industry needs to publish proper warnings and owner’s manuals for all products. The time to act is now.
I think that we need to start changing the terminology around the hazards associated with cannabis from food safety hazards to product safety hazards. These hazards have not only been associated with harmful effects for those that ingest cannabis infused products, but also for those that consume the cannabis products in other ways such as inhalation (vaping or smoking). So, when we refer to these hazards as food safety hazards, the immediate thought is edibles, which misleads cultivators, manufacturers and consumers to have a false sense of security around the safety of products that are consumed in other ways.
By standardizing and documenting safety procedures, manufacturers mitigate the risk of cannabis-specific concerns
There are several product safety hazards that have been associated with cannabis. These hazards can become a public health problem if not controlled as they could harm the consumer, regardless of the method of consumption.
Let’s take a look at the different types of hazards associated cannabis:
Biological Hazards refer to those microorganisms that can cause illness to the consumer of a product that contain them. They are not visible to the naked eye and are very dangerous when their metabolic by-products (toxins) are ingested or their spores are inhaled. The symptoms for illnesses caused by these microorganisms will vary. Consumers may experience gastrointestinal discomfort (vomiting, diarrhea), headaches, fever and other symptoms. The ingestion of these pathogens, allergens or their by-products may lead to death, if the illness is not treated on time or if the consumer of the product is immunocompromised. In addition, the inhalation of mold spores when smoking cannabis products, can lead to lung disease and death. Some of the biological hazards associated with cannabis are: Salmonella sp., E. coli, Clostridium botulinum, Aspergillus sp. and Penicillium sp.
Chemical Hazards refer to those chemicals that can be present in the plant or finished product due to human applications (pesticides), operational processes (extraction solvents and cleaning chemicals), soil properties (heavy metals), environmental contamination (radiological chemicals) or as a result of occurring naturally (mycotoxins and allergens). Consuming high concentrations of cleaning chemicals in a product can lead to a wide range of symptoms from mild rash, burning sensation in the oral-respiratory system, gastrointestinal discomfort or death. In addition, long term exposure to chemicals such as pesticides, heavy metals, radiological contaminants and mycotoxins may lead to the development of cancers.
Physical Hazards refer to those foreign materials that may be present in the plant or finished product. Foreign materials such as rocks, plastics or metals can cause harm to the consumer by chipping teeth or laceration of the mouth membranes (lips, inner cheeks, tong, esophagus, etc.) In the worst-case scenario, physical hazards may lead to choking, which can cause death due to asphyxiation.
These hazards can be prevented, eliminated or reduced to an acceptable level when foundational programs (Good Agricultural/Cultivation Practices, Good Manufacturing Practices, Allergen Management Program, Pest Control, etc.) are combined with a Food [Product] Safety Plan. These lead to a Food [Product] Safety Management System that is designed to keep consumers safe, regardless of the method of consumption.
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