As the cannabis industry grows and the category becomes increasingly crowded, package design is more important than ever. Impactful and meaningful branding is key to getting noticed, differentiating from the competition, connecting with consumers and ultimately making the sale. Today’s cannabis labels are more varied than ever before. They can be fun or luxurious, contemporary or retro, colorful or simplistic. Many brands are moving beyond traditional cannabis leaves to more unique, modern, and unexpected interpretations of cannabis plants. Others are forgoing leaf imagery altogether in favor of more evocative graphics, minimal design or mainstream motifs.
While there is no one-size-fits-all design for cannabis packaging, there are many regulatory requirements and branding best practices to consider. We’ve outlined some critical things to keep in mind before starting your cannabis package design.
Know Your Target Audience
Understanding who your target audience is essential for the appropriate design
There are a variety of cannabis users, each with unique needs, interests and attitudes. Understanding who you’re targeting is essential in determining the appropriate brand design strategy. Graphics for millennials will look different than those for baby boomers. But demographics aren’t the only thing to consider when identifying your target consumer. Euromonitor International has identified several lifestyle and personality-driven consumers segments:
Seasoned Consumer – consistent, daily consumer who defies stereotypes and often consider themselves connoisseurs.
Casual Social – regular but not daily consumer who uses cannabis as part of their broader lifestyle.
Dabbler – occasional user who is familiar and comfortable with cannabis but unlikely to use it regularly.
Cannacurious – consumer who is interested in cannabis and demonstrates an openness to using it.
Understanding the motivations of various consumer groups and looking beyond stereotypes or traditional age- and gender-driven demographics can help reach consumers in a more targeted, authentic, and compelling way.
Have a Unique Brand Personality
Concept shots by the Studio One Eleven design division
Design often provides the first impression for a brand, especially in the cannabis category. The first step in developing a winning package design is to determine the best design strategy to differentiate from the competition, communicate your brand story and connect with consumers. Start by thinking about what personality fits your brand, what kind of experience you want to create and what emotions you want to evoke. Do you want to feel healthy and medicinal? Earthy and natural? Sophisticated? Whimsical? Each personality inspires different design solutions. The designers at Studio One Eleven, the Design & Innovation Division of Berlin Packaging, begin each branding project by developing design platform boards that showcase different ways to communicate the brand personality through design, including color, typography, imagery, and more. These platform boards are a great tool to gain alignment on the most effective and appropriate design strategy before digging into tactical design approaches. They can also help guide brand design across other touchpoints, including digital, social media, and advertising.
Understand Regulatory Requirements
Packaging in the cannabis and CBD industries is heavily regulated. In addition to attracting consumers, your package must comply with local, state and federal regulations. Some states mandate that cannabis packaging can’t appeal to children – so no cartoon images or graphics that resemble familiar candy brands. The FDA prohibits cannabis products from making health-related claims, so it is essential to carefully assess the language used on packaging. Vital information such as ingredients, warnings, health risks, impairment of abilities, proper dosage, batch number and more must be included on cannabis labels.
Label material, thickness and texture are tactile elements that can improve the design experience
These are just a few of the package design requirements to consider. Regulations can vary from state to state, so finding a packaging partner who understands the complex and constantly change rules is critical. Berlin Packaging has been a trusted resource for cannabis packaging since 2014. We are uniquely positioned to help cannabis and CBD companies of all sizes in the fast-paced, ever-changing cannabis industry.
Consider All Aspects of Your Package
Beyond graphics, tactile elements can be important to the overall brand design experience. Label material, thickness and texture, embossing and foil stamping, and die-cuts can create a premium impression and add visual interest. Structural design can also help differentiate from the competition and create an elevated user experience. How a package opens and closes, dispenses and doses, and protects and preserves the product inside are all essential considerations. Berlin Packaging has a vast network of manufacturers with hundreds of stock bottles, tins, jars, tubes and closures in a variety of shapes, sizes and materials to choose from, as well as custom solutions available through Studio One Eleven.
Understanding your target consumer, identifying and communicating a unique brand personality, complying with all regulatory requirements and taking a holistic approach will lead to impactful packaging that wins with consumers and grows your business.
Vaping is a multi-billion dollar cannabis product category representing more than 20% category share in the US, according to a recent Headset.io report. The 2019 vaping crisis, whereby lung injury and several deaths were caused by the adulteration of vapor pen cartridges with vitamin E acetate, highlighted the importance of safety and emissions testing for vapor pen products. In addition to volatile organic compounds, metals and ceramics contained in the heating elements of cartridges are also a concern. While the FDA has a robust program for emissions testing in nicotine products, they do not currently regulate cannabis. Cannabis vaping is currently regulated at the state level in the United States.
Cannabis vaping is popular among minors owing to its discrete nature. In a recent study published in the Journal of the American Medical Association (JAMA), 14.7% of teens reported vaping cannabis in 2018. In a separate research study, University of Michigan researchers found that teens vaping cannabis were two times more likely to experience respiratory issues than teens who smoked e-cigarettes.
We spoke with Corey Mangold, CEO and founder of PurTec Delivery Systems, to learn more about cannabis vaping safety and their PurGuard technology. Prior to entering the cannabis space, Corey founded a software company in 1998. He also founded the advertising agency Gigasavvy in 2008, which he recently exited from in March 2021.
Aaron Green: How did you get started in the cannabis industry?
Corey Mangold: I got started in the cannabis industry in 2016. My daughter was away at college in San Luis Obispo and got pregnant and was going to have a baby, which obviously I was excited about. I decided to have her come down to Southern California and start a company together, as I’ve done multiple times in my career successfully. I wanted to show her the ropes, and teach her everything from finance to HR, to business development, marketing – everything it takes to be successful – and give her the tools that she would need to be successful for her life.
Green: What kind of things were you into before 2016?
Mangold: I founded my first company in 1998 in the software industry and had that company up until 2005. In 2008 I started another company called Gigasavvy, a nationally recognized advertising agency out of Irvine, California, which I successfully exited in March of 2021.
Corey Mangold, CEO and founder of PurTec Delivery Systems
When deciding to start a company with my daughter, we were interested in the cannabis industry – I think everybody was back in 2016. In 2016, I had started using cannabis again after probably about a 16- or 17-year hiatus. I was using a vape because I had children in the house. I went to literally anywhere I could and bought every type of cartridge on the market. What I found was that their user experience was not like what it was on the nicotine side of vaping. I reached out to associates of mine who had been manufacturing vapes since 2011, starting with the blue e-cigarette, and we engineered a unique device that was proprietary and completely unlike anything on the market. It was incredible, and still to this day, I think it’s probably the best 510 thread cart on the market. We launched that under the Orchid Essentials (CNSX: ORCD, OTC:ORVRF) brand in California and Oregon.
Green: Is that cart something that you sell to other brands as well, or is it purely for the Orchid brand?
Mangold: Yes, purely for the Orchid brand, but it’s what inspired me to start PurTec Delivery Systems. After a few years of struggling in this industry because we didn’t have the access to capital needed – Orchid is a US company traded on the Canadian Stock Exchange (CSE:ORCD, OTC:ORVRF) – and dealing in a substance that’s federally illegal, there was no access to any traditional financing, be it factoring or inventory financing. We were literally creating as much product as we could every month and then selling out almost instantly, and then waiting till the next month to get money in from all our accounts to make more. We had to slug it out. We did get into a little over 500 stores in California and Oregon, but it was just a battle, and I didn’t really want to be touching cannabis.
In 2020, I had a breakthrough in my strategy. I was watching the TV show Gold Rush and I watched one of the guys go and have to buy a new wash plant. He pulls up to this dealer’s yard that sells wash plants and tractors. I saw this dealer had a lot of inventory and clearly a lot of money, and I realized the place to make money was selling the shovels, not really digging for gold. I said to myself if I have the best shovel out there, why am I digging? I should just be innovating new shovels and selling shovels. Hence, I started PurTec Delivery Systems and now for the last year and a half have been 100% focused on developing advanced vaporizer technologies.
Green: Tell me more about PurTec.
Mangold: I founded PurTec with the sole intention of creating safe vaporizers for consumers. We conducted an 18-month safety study in Switzerland with our partners, on vaping devices in the market. I learned a lot of things that I already knew but wanted to see it proven by independent laboratories and by PhDs and MDs, and really see what was so concerning to me. For the last year and a half, we have sought to develop a safe line of vaporizers. I’m very cognizant about what’s going on in my body and want to know what’s going on internally with these products. I don’t think anyone would be using them if they knew what was really going into their lungs.
Green: What are some of the things that consumers should be thinking about when it comes to vape safety?
Mangold: Consumers should be thinking about all the different aspects from inhaling vaporized heavy metals to ceramics. Ceramic particle inhalation is one of my biggest concerns. I think it’s been ignored. I think all the manufacturers know about it and I think it’s been swept under the rug. I think it’s one of the threats that we have. There should be regulatory bodies that are out there protecting consumers like the FDA, hence why I believe federal legalization is so important, because if the FDA was involved not even one of these products would be on the market because the first thing the FDA would do would be very extensive emissions testing to find out what compounds and potential toxins are entering into your body.
Green: There’s clearly a need for safety and regulation in the space, but from where you’re sitting, is there a demand? When consumers go into a store, one of their main focuses is: what’s the THC content? How do you see consumer demand for safety and how do you think about building that awareness?
Mangold: I don’t think there is consumer demand yet. The consumer demand right now is for getting medicated and having fun or getting whatever relief or primary reason you use cannabis. I can point to a direct correlation with the opioid epidemic. No one knew they were as horrible as they are, and doctors were prescribing them left and right, and everyone thought it was okay. People think these cannabis products are okay because they’re on the shelf in every licensed dispensary, and the California Department of Health and the Department of Health in every other state and country has been involved to some degree. So, consumers think that they’re safe. The problem is they’re likely not just like we weren’t with opioids.
I don’t think the consumer demand will be there for quite some time until we start seeing a lot of long-term health impacts where we start seeing people getting lung disease, we start seeing people getting iron lung, different potential brain issues from inhaling adhesives and heavy metals. I think once the health impacts are seen clinically – just like we saw with the opioid crisis – once that was really in the forefront, everybody saw with their own eyes, and then they were aware that there was a problem. So, I think that it’s important to become aware of the potential health impacts, but I think it will take quite some time before that happens.
Green: It sounds to me like you want to get ahead of the industry on this because if it does go federally legal, there will be more stringent requirements. How do you think about that from a product design and development perspective to get ahead of a problem that exists but isn’t reflected in current regulations?
Mangold: The best thing we can do right now in the cannabis vape industry is to look at what the nicotine vape industry is doing. It is controlled by the FDA and there are standards for vaporizers in other parts of the world that are very stringent, like the AFNOR standards, which are in the European Union regulations for vaporizer safety.
What we do is we find the most stringent standards in the world, and we test our products to those standards. If the standards get stricter, we can develop our products and re-engineer them to meet those new requirements. Right now, all our products are emissions tested at AFNOR standards and over-engineered even for those standards. We also are constantly working on reduction of potentially hazardous materials: reductions of heavy metals; only using proven safe and effective materials and FDA approved materials like SAE 316L surgical stainless steel; and using improved ceramics that are not as brittle as the ceramics being used by almost every single manufacturer out there. There’s a lot of things that can be done. It takes supply chain management, understanding the technology and having strong solid teams of scientists and doctors that know this stuff much better than anyone else in the industry does, and leveraging their expertise.
Green: You recently launched a safety feature for minors. Can you tell me more about that?
Mangold: Yes. Two weeks ago, we launched a new software application called PurGuard. PurGuard is a massive innovation and is the first of its kind that we’re aware of. It’s a piece of software that pairs with any device, whether it’s a disposable pod system or a 510 cartridge. You then pair it to your phone and take a picture of your government ID. Then the camera looks at your face, runs quick facial recognition and runs an age check through the largest age-checking platform API in the world. Then based on location and legal age of the user’s location – some states are 18 and different countries have different rules – it validates your ability in your market to be consuming that product. This technology works in 180 different countries.
Once that occurs and the device is ready for you to use, we have another feature that we’ve developed. There is an auto-lock feature that we have where if you’re a parent, like me, and you have kids in the house, you can turn your device to auto-lock right from your phone. When you walk away from your phone and are 10 feet away, your Bluetooth connection will break, and it will automatically lock the device and so your child can’t walk into your bedroom and take your device.
This technology is important to us. Consuming cannabis is horrible for the health of minors. There are serious mental effects on brain growth that occur from using cannabis at a young age because the brain is still developing up until about the age of 23 to 25. So, it’s not safe for them to be using. Of course, I’m sure we all smoked when we were in high school, but the ease of use of vape and the discretion, I think allows minors to use significantly more cannabis than previous generations did 20, 30, 40 years ago. It’s a massive problem right now and I think it’s just a matter of time before the FDA requires such protections. This industry can only survive if we protect minors. So, we’re getting ahead of the curve and setting the standard.
Green: What kind of hardware does PurGuard work with?
Mangold: PurGuard works with every single type of device that we manufacture: 510 thread cartridges, disposables, and pods. If it’s a 510-thread cartridge, the battery has to be a PurTec battery, and the cartridge has to be a PurTec cartridge. They communicate to each other through certain technologies, and it can even recognize what oils are in the cartridge or the pod or the disposable. Moreover, we can tell what strain it is, when it was manufactured, what the potency levels are and more. It records all the usage statistics. We’ve also proven with our hardware, the actual milligram contents being consumed per hit, or draw based on volume, and draw duration. We can track and report to people and say, “Hey, you’re consuming 100 milligrams of THC a day, that’s too high, you need to slow down and maybe go down to 50 milligrams a day.” That will be what is required as it is being required in the nicotine industry under the FDA pre-market tobacco applications (PMTA). When the FDA comes into cannabis, they’re going to want to see the same thing. They’re going to want to know that cannabis products are not promoting people to use more, and they are trying to get people to use less. It doesn’t mean stop using it, but use it in moderation, like everything in life. You shouldn’t be drinking a bottle of whiskey a day. You probably shouldn’t be smoking a pound of weed a day either. Everything in life is moderation and this application not only protects minors but also teaches us about our consumption habits.
Green: A theme here is “skating where the puck is going to be.” What kind of trends are you looking at right now in the industry?
Mangold: The biggest trend I see right now in the industry is disposables. We’ve seen that the trends in cannabis consumption trail behind the nicotine industry by 2-4 years. We see a lot of our customers and potential customers shifting into disposables and are now seeing a very large spike in sales of disposables. I think that’s a big trend, but with that comes another major issue: we now have lithium-ion batteries being thrown away at astonishing rates and going into landfills. PurTec has an answer for that that we’ll be launching here in the next four to six months That will be I think the biggest innovation in regards to eco-friendliness within the vape industry. That’s where I see things going right now.
Green: What are you most interested in learning about?
Mangold: The thing that interests me most, and what I’m most interested in learning about is regulations. Not the regulations themselves, but how regulations are drafted. I’ve sat in several meetings with rules committees for different regulatory bodies throughout the United States and it is laughable. I was recently in a state I’m not going to mention. I asked them what scientists and what doctors they have consulted with and they said none. I just found that dumbfounding. The state regulatory bodies are making decisions without doing due diligence and without bringing in subject matter experts in some cases.
I’m very interested in learning about how we can change our regulatory bodies. Taxpayers pay these salaries and their job at the end of the day is to protect consumers. I think that these cannabis regulatory bodies need to be way more involved with their state’s Department of Health, as well as with the FDA, and National Institute of Health and looking at this as a holistic approach. How do we protect consumers? This is a drug. It’s like anything else out there. If you’re selling tomatoes that were sprayed with a certain pesticide, you must do the research and you have to know what’s in that product before you start putting it in people’s hands. Otherwise, you may have people dying left and right. So, I’m very interested in learning more about regulatory bodies and how they need to evolve and hopefully I can help push them into evolving sooner rather than later.
Green: Great, that concludes the interview, Corey.
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.
Across the country and across the world, governments that legalize cannabis implement increasingly rigorous requirements for laboratory testing. Helping to protect patients and consumers from contaminants, these requirements involve a slew of lab tests, including quantifying the levels of microbial contaminants, pathogens, mold and heavy metals.
Cannabis and hemp have a unique ability to accumulate elements found in soil, which is why these plants can be used as effective tools for bioremediation. Because cannabis plants have the ability to absorb potentially toxic and dangerous elements found in the soil they grow in, lab testing regulations often include the requirement for heavy metals testing, such as Cadmium, Lead, Mercury, Arsenic and others.
In addition to legal cannabis markets across the country, the USDA announced the establishment of the U.S. Domestic Hemp Production Program, following the enactment of the 2018 Farm Bill, essentially legalizing hemp. This announcement comes with information for hemp testing labs, including testing and sampling guidelines. While the information available on the USDA’s website only touches on testing for THC, required to be no greater than 0.3% dry weight concentration, more testing guidelines in the future are sure to include a discussion of heavy metals testing.
Table 1. ICP-MS operating conditions (shaded parameters were automatically optimized during start up for the HMI conditions).
In an application note produced by Agilent Technologies, Inc., the Agilent 7800 ICP-MS was used to analyze 25 elements in a variety of cannabis and hemp-derived products. The study was conducted using that Agilent 7800 ICP-MS, which includes Agilent’s proprietary High Matrix Introduction (HMI) system. The analysis was automated by using the Agilent SPS 4 autosampler.
Instrumentation
The instrument operating conditions can be found in Table 1. In this study, the HMI dilution factor was 4x and the analytes were all acquired in the Helium collision mode. Using this methodology, the Helium collision mode consistently reduces or completely eliminates all common polyatomic interferences using kinetic energy discrimination (KED).
Table 2. Parameters for microwave digestion.
As a comparison, Arsenic and Selenium were also acquired via the MassHunter Software using half-mass correction, which corrects for overlaps due to doubly charged rare earth elements. This software also collects semiquantitative or screening data across the entire mass region, called Quick Scan, showing data for elements that may not be present in the original calibration standards.
SRMs and Samples
Standard reference materials (SRMs) analyzed from the National Institute of Standards and Technology (NIST) were used to verify the sample prep digestion process. Those included NIST 1547 Peach Leaves, NIST 1573a Tomato Leaves and NIST 1575 Pine Needles. NIST 1640a Natural Water was also used to verify the calibration.
Figure 1. Calibration curves for As, Cd, Pb, and Hg.
Samples used in the study include cannabis flower, cannabis tablets, a cannabidiol (CBD) tincture, chewable candies and hemp-derived cream.
Sample Preparation
Calibration standards were prepared using a mix of 1% HNO3 and 0.5% HCl. Sodium, Magnesium, Potassium, Calcium and Iron were calibrated from 0.5 to 10 ppm. Mercury was calibrated from 0.05 to 2 ppb. All the other elements were calibrated from 0.5 to 100 ppb.
Table 3. Calibration summary data acquired in He mode. Data for As and Se in shaded cells was obtained using half mass correction tuning.
After weighing the samples (roughly 0.15 g of cannabis plant and between 0.3 to 0.5 g of cannabis product) into quartz vessels, 4 mL HNO3 and 1 mL HCl were added and the samples were microwave digested using the program found in Table 2.
HCI was included to ensure the stability of Mercury and Silver in solution. They diluted the digested samples in the same acid mix as the standards. SRMs were prepared using the same method to verify sample digestion and to confirm the recovery of analytes.
Four samples were prepared in triplicate and fortified with the Agilent Environmental Mix Spike solution prior to the analysis. All samples, spikes and SRMs were diluted 5x before testing to reduce the acid concentration.
Calibration
Table 4. ICV and CCV recovery tests. Data for As and Se in shaded cells was obtained using half mass correction tuning.
The calibration curves for Arsenic, Cadmium, Lead and Mercury can be found in Figure 1 and a summary of the calibration data is in Table 3. For quality control, the SRM NIST 1645a Natural Water was used for the initial calibration verification standard. Recoveries found in Table 4 are for all the certified elements present in SRM NIST 1640a. The mean recoveries and concentration range can also be found in Table 4. All the continuing calibration solution recoveries were within 10% of the expected value.
Internal Standard Stability
Figure 2 highlights the ISTD signal stability for the sequence of 58 samples analyzed over roughly four hours. The recoveries for all samples were well within 20 % of the value in the initial calibration standard.
Figure 2. Internal standard signal stability for the sequence of 58 samples analyzed over ~four hours.
Results
In Table 5, you’ll find that three SRMs were tested to verify the digestion process. The mean results for most elements agreed with the certified concentrations, however the results for Arsenic in NIST 1547 and Selenium in both NIST 1547 and 1573a did not show good agreement due to interreferences formed from the presence of doubly-charged ions
Table 5. Mean concentrations (ppm) of three repeat measurements of three SRMs, including certified element concentrations, where appropriate, and % recovery.
Some plant materials can contain high levels of rare earth elements, which have low second ionization potentials, so they tend to form doubly-charged ions. As the quadrupole Mass Spec separates ions based on their mass-to-charge ratio, the doubly-charged ions appear at half of their true mass. Because of that, a handful of those doubly-charged ions caused overlaps leading to bias in the results for Arsenic and Selenium in samples that have high levels of rare earth elements. Using half mass correction, the ICP-MS corrects for these interferences, which can be automatically set up in the MassHunter software. The shaded cells in Table 5 highlight the half mass corrected results for Arsenic and Selenium, demonstrating recoveries in agreement with the certified concentrations.
In Table 6, you’ll find the quantitative results for cannabis tablets and the CBD tincture. Although the concentrations of Arsenic, Cadmium, Lead and Cobalt are well below current regulations’ maximum levels, they do show up relatively high in the cannabis tablets sample. Both Lead and Cadmium also had notably higher levels in the CBD tincture as well.
Table 6. Quantitative data for two cannabis-related products and two cannabis samples plus mean spike recovery results. All units ppb apart from major elements, which are reported as ppm.
A spike recovery test was utilized to check the accuracy of the method for sample analysis. The spike results are in Table 6.
Using the 7800 ICP-MS instrument and the High Matrix Introduction system, labs can routinely analyze samples that contain high and very variable matrix levels. Using the automated HMI system, labs can reduce the need to manually handle samples, which can reduce the potential for contamination during sample prep. The MassHunter Quick Scan function shows a complete analysis of the heavy metals in the sample, including data reported for elements not included in the calibration standards.
The half mass correction for Arsenic and Selenium allows a lab to accurately determine the correct concentrations. The study showed the validity of the microwave sample prep method with good recovery results for the SRMs. Using the Agilent 7800 ICP-MS in a cannabis or hemp testing lab can be an effective and efficient way to test cannabis products for heavy metals. This test can be used in various stages of the supply chain as a tool for quality controls in the cannabis and hemp markets.
Disclaimer: Agilent products and solutions are intended to be used for cannabis quality control and safety testing in laboratories where such use is permitted under state/country law.
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