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dry cannabis plants

Moisture Matters: Why Humidity Can Make or Break a Cannabis Cultivator’s Bottom Line

By Sean Knutsen
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dry cannabis plants

Vintners have known for centuries that every step in the winemaking process—from cultivation and harvest techniques to fermentation, aging and bottling—has immense impact on the quality and value of the final product.

And that same level of scrutiny is now being applied to cannabis production.

As someone who has worked in the consumer-packaged goods (CPG) space for decades, I’ve been interested in finding out how post-harvest storage and packaging affect the quality and value of cannabis flower. After digging into the issue some more, storage conditions and humidity levels have indeed come into focus as major factors, beyond just the challenges of preventing mold.

Weighty Matters

I enlisted my research team at Boveda, which has studied moisture control in all manner of manufactured and natural CPG products, to look closer at what’s happening with cannabis once it leaves the cultivation room. There’s not a lot of research on cannabis storage—we checked—and so we explored this aspect further. We were frankly surprised by what a big effect evaporation has on quality and how this is playing out on the retail level.

We suspected moisture loss could affect the bottom line too, and so we did some number-crunching.

It’s well understood that the weight of cannabis flower directly correlates with its profitability—the heavier the yield, the higher the market value. Here’s what our analysis found: A mere 5% dip below the optimal relative humidity (RH) storage environment eliminates six pounds per every 1,000 pounds of cannabis flower. At $5 per gram wholesale, that works out to upwards of $13,500 in lost revenue—and that’s with just a 5% drop in RH below the target range of 55-65% established by ASTM International, an independent industry standards organization.

We also purchased flower at retailers in multiple state markets and commissioned a lab to test the samples, which revealed that most strains sold today are well below the optimal RH range (55-65%). Regardless of fluctuating wholesale prices, when you do the math it’s clear that tens of thousands of dollars in revenue are simply evaporating into thin air.

Why So Dry?

Historically, cultivators, processors and packagers have emphasized keeping flower below a particular humidity “ceiling” for a reason: Flower that’s too moist is prone to hazardous mold and microbial growth, so it’s understandable that many operators err on the side of being overly dry.

The misconception that cannabis flower can be “rehydrated” is another cause of dryness damage. But this method irrevocably damages the quality of the flower through trichome damage.

trichome close up
The fine outgrowths, referred to as trichomes, house the majority of the plant’s resin

Those delicate plant structures that house the all-important cannabinoids and terpenes become brittle and fragile when stored in an overly dry environment, and are prone to breaking off from the flower; they cannot not be recovered even if the flower is later rehydrated.

When trichomes are compromised, terpenes responsible for the aroma, taste and scent of cannabis also can evaporate. Overly dried-out cannabis doesn’t just lose weight and efficacy—it loses shelf appeal, which is particularly risky in today’s market.

Today’s consumers have an appreciation for how premium flower should look, smell and taste. Rehydration cannot put terpenes back in the flower, nor can it re-attach trichomes to the flower, which is why preservation of these elements is so key.

Cannabis Humidity Control

Cured cannabis flower can remain in storage potentially for months prior to sale or consumption. By the time it reaches the end consumer, much of the cannabis sold in regulated environments in the U.S. and Canada has suffered from dry damage.

dry cannabis plants
Rows of cannabis plants drying and curing following harvest

There are various humidity controls available for cannabis cultivators: desiccants that absorb water vapor; mechanical equipment that alters RH on a larger scale; or two-way humidity-control packets designed for storage containers.

In the CPG sector, with other moisture-sensitive products such as foods and electronics, we’ve seen that employing humidity controls will preserve quality, and cannabis flower is no different.

Saltwater-based humidity control solutions with two-way vapor-phase osmosis technology automatically add or remove water vapor as needed to maintain a constant, predetermined RH level and ensures a consistent level of moisture weight inside the cannabis flower.

Here’s one more notable finding we discovered in our storage research: Third-party lab tests commissioned by Boveda showed cannabis stored with humidity control had terpene and cannabinoid levels that were 15% higher than cannabis stored without.

Cannabis stored within the optimal humidity range maximizes all the qualities that attract and retain customers. Similar to wine-making, when cannabis cultivators focus on quality control they need to look beyond the harvest.

Beyond THC: Encouraging Cannabinoid and Terpene Production with LEDs

By Andrew Myers
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For years, tetrahydrocannabinol (THC) got all the attention. While THC certainly delivers its own benefits (such as relaxation and pain relief), there’s a whole host of other – and often overlooked – compounds found in cannabis with important benefits as well. THC is truly only the tip of the iceberg when it comes to cannabis’s potential.

As the cannabis industry evolves with changing consumer tastes and developing medical research, growers may employ techniques to boost cannabinoid and terpene profiles in their harvests – beyond merely focusing on THC. Advanced LEDs allow growers to elicit specific biological responses in cannabis crops, including increased concentrations of these naturally occurring chemical compounds.

The Foundation of Cannabis’s Effects
Whether used medicinally or otherwise, cannabis has changed our society and many of our lives – and there’s a collection of naturally occurring chemical compounds, known as cannabinoids and terpenes, to thank.

  • The cannabinoids THC and CBD are the most common and well-researched, however they are accompanied by more than 200 additional compounds, including cannabinol (CBN), cannabigerol (CBG) and tetrahydrocannabivarin (THCV), among others.
  • The cannabis plant also contains terpenes. These structures are responsible for giving flowers (including cannabis), fruits and spices their distinctive flavors and aromas. Common terpenes include limonene, linalool, pinene and myrcene.

Both cannabinoids and terpenes are found in the cannabis plant’s glandular structures known as trichomes. Look closely, and you’ll notice trichomes coating the cannabis flowers and leaves, giving the plant an almost frosty appearance.

macropistil/trichome
A macro view of the trichomes and pistils on the plant

Trichomes – which are found across several plant species – are a key aspect of a cannabis plant’s survival. The specific combination of metabolites produced by trichomes may attract certain pollinators and repel plant-eating animals. Moreover, trichomes (and specifically THC) may act as the plant’s form of sunscreen and shield the plant from harmful ultraviolet rays.

While they play an essential part in the cannabis plant’s lifecycle, trichomes are volatile and easily influenced by a range of environmental factors, including light, heat, physical agitation and time. Therefore, environment is a defining variable in the development of these important structures.

How LEDs Support Cannabinoid and Terpene Development in Crops
Spectrally tunable LEDs give indoor cannabis growers unparalleled control over their crops. As research has expanded about plants’ responses to the light spectrum, growers have discovered they are able to elicit certain physiological responses in the plant. This phenomenon is called photomorphogenesis. At its root, photomorphogenesis is a survival tactic – it’s how the plant responds to miniscule changes in its environment to increase the chances of reaching full maturity and, eventually, reproducing. While cultivated cannabis plants won’t reproduce at an indoor setting, growers can still use the light spectrum to encourage strong root and stem development, hasten the flowering process and the development of bigger, brightly colored flowers.

It makes sense that using the proper light spectrums may also have an impact on the production of specific cannabinoids and terpenes – an important factor when responding to highly specific consumer needs and desires, both within medical and adult-use markets.

Here are a few more reasons why utilizing full-spectrum LEDs can lead to higher quality cannabis:

  • Lower Heat, but the Same Intensity.
    When compared to HPS, fluorescent and other conventional lighting technologies, LEDs have a much lower heat output, but provide the same level of intensity (and often improved uniformity). This represents an enormous advantage for cannabis cultivators, as the lights can be hung much closer to the plant canopy without burning trichomes than they would be able to with other lighting technologies.
  • UV Light. Cannabinoids and terpenes are part of the cannabis plant’s natural defense mechanism, so it makes sense that lightly stressing plants can boost cannabinoid and terpene numbers. Some studies illustrate an increase in UV-B and UV-A light can lead to richer cannabinoid and terpene profiles.1 It’s a fine line to walk, though – too much UV can result in burned plants, which leads to a noticeable drop in cannabinoids.
  • Full-Spectrum Capabilities. The cannabis plant evolved over millions of years under the steady and reliable light of the sun. Full-spectrum is the closest thing to natural sunlight that growers will be able to find for indoor growing – and they’ve been shown to perform better in terms of cannabinoid development. A 2018 study titled “The Effect of Light Spectrum on the Morphology and Cannabinoid Content for Cannabis Sativa L.,” explored how an optimized light spectrum resulted in increased expression of cannabinoids CBG and THCV.2

This is the most important tip for indoor growers: your plants’ environment is everything. It can make or break a successful harvest. That means cultivators are responsible for ensuring the plants are kept in ideal conditions. Lights are certainly important at an indoor facility, but there are several other factors to consider that can affect your lights’ performance and the potency of your final product. This includes your temperature regulation, humidity, the density of plants within the space, CO2 concentration and many other variables. For the best results, your lights should be fully aligned with other environmental controls in your space. Nothing sabotages a once-promising crop like recurrent issues in the indoor environment.

solsticegrowop_feb
Indoor cultivation facilities often use high powered lights that can give off heat

Cannabinoids and terpenes take time to develop – so cultivators will want to avoid harvesting their plants too early. On the other hand, these compounds begin to degrade over time, so growers can’t wait too long either.

Cultivators seeking potent cannabinoid and terpene profiles must find a happy medium for the best results – and the best place to look is where cannabinoids and terpenes develop: the trichomes. With a microscope, cultivators can get up close and personal with these sparkly structures. Younger plants begin with clear trichomes, which eventually become opaque and change to amber. Once your plants show amber-hued trichomes, they’re ready for harvest.

The truth here is that there’s no perfect formula to elicit show-stopping cannabinoids and dizzying terpenes with every harvest. A lot of cannabis cultivation is based around trial-and-error, finding what works for your space, your business and your team. But understanding the basics around indoor environmental controls like lighting and temperature – and how they can affect the development of cannabinoids and terpenes – is an excellent place to start. Using high quality equipment, such as full-spectrum LED lighting can boost both cannabinoid and terpene production, resulting in richer, more potent and higher quality strains.


References:

  1. Lyndon, John, Teramura, Alan H., Coffman, Benjamin C. “UV-B Radiation Effects on Photosynthesis, Growth and Cannabinoid Production of Two Cannabis Sativa Chemotypes.” August 1987. Photochemistry and photobiology. Web. https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1751-1097.1987.tb04757.x?&sid=nlm%3Apubmed
  2. Magagnini G., Grassi G., Kotiranta, S. “The Effect of Light Spectrum on the Morphology and Cannabinoid Content of Cannabis sativa L.” 2018. Medical Cannabis and Cannabinoids. Web: https://www.karger.com/Article/FullText/489030

NHS Finally Approves A Few Cannabis-Based Medicines for England & Wales

By Marguerite Arnold
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You have to hand it to the Brits right now. There is nothing that seems to be working in a land caught in the gray zone of “Brexit or Not.”

That absolutely can be said for cannabis prescriptions and the subsequent availability of the drug, via the National Health Service (NHS). For all the hand-wringing and drama so far, it has only taken a year between possibility and execution. That said if Brexit were that “fast” who knows what might have already happened to the NHS to begin with?

Regardless of the many deservedly snarky comments in the room (from both the British and elsewhere point of view), here are the basics:

Cannabis-based medicine will be available only to treat two relatively rare forms of childhood epilepsy, Multiple Sclerosis, or chemo-induced nausea caused by cancer treatment. The drug can also only be prescribed by specialist doctors (not GPs).

Who says the NHS and the National Institute for Health and Care Excellence (or NICE for short) doesn’t move quickly?

Perhaps they should have attended the 10th biannual IACM conference in Berlin at the beginning of the month. There were certainly reform-minded Brits who did.

What Were They Thinking?

When reading the recommendations from NICE, it is hard to imagine how a medical policy body could get most of the cannabis discussion so wrong. While it is nice to know that dying children seem to be highly effective in setting drug policy in the UK, that is hardly comforting to the potentially millions of adult Brits who have absolutely been left out, this time.

This begs the question why an adult in chronic pain or suffering muscular spasticity of a kind not caused by MS (much less adult epileptics) is somehow in a different basket of care? Indeed, the idea of recommending against the use of THC specifically for chronic pain is, at this point, a sign of at minimum gross inability to read even recent medical studies from just about everywhere, not to mention patient evidence and testimony. Those adults who managed to get coverage, at least so far, will be given the right to continue treatment until their doctor decides otherwise. Not a very comforting place to be.

Here Comes The Gray And Black Market

All this will do of course, is push those who do not qualify for NHS coverage into either the private market (if they can afford it), or more likely, the existing gray and black market. The former of which of course, is, like other places, underground.

And while GW Pharmaceuticals has everything to cheer about, the rest of the established industry, at this point, surely should be ready to take a concerted stand.

The ridiculous posture of the NHS beyond that on cannabis in this day and age is hard to understand. Even the Germans are ahead of them. And Deutschland is hardly a country where the use of cannabis is anything like mainstream yet.

But then, welcome again, to the wacky world of cannabis reform where it is possible to take one step forward and then many back.

Is This The Face Of The British Conversation Post Brexit?

If there were a single conversation to unite a country right now, the medical coverage of cannabis for the country’s poorest and sickest might be it.

Unfortunately, this does not appear to be a conversation that will progress in the UK until it moves in the United States. Federal reform in America would of course open the doors, and immediately, to a state-like “recreational” market, where, theoretically, patients could buy any kind of cannabis they want.

Just like Colorado. Or California.

But here is the rub. In the United States, federal reform has not come yet. And even then, what health insurers decide to cover or not, and for what condition, is a topic many Brits have never had to really contemplate. And certainly not when it comes to cannabis. This new decision by the health authorities might just be a terrifying glimpse of what is yet on the agenda if and when Britain “divorces” the continent.

Is The Dream Of Medical Coverage For Cannabis Just That?

Here is the good news. Cannabis always makes progress, no matter how long the slog has been. If the Brits are determined to sit this one out while their citizens suffer, the conversation is still alive, if struggling, elsewhere. Notably Germany. And Israel.

These are, to date, the only two countries who have jumped in, seriously, on the issue of insurance coverage of cannabis, and for a broad range of conditions, although even here in both countries, there are still issues and controversies galore.

The terrible reality in the room however, is clearly writ large for all those who are brave enough to grasp it. Most patients are going to be on the hook for the cost of their medical cannabis for a long time to come.

North Carolina Gets First Accredited Cannabis Lab

By Cannabis Industry Journal Staff
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In a press release published on Monday, the American Association for Laboratory Accreditation (A2LA), announced the renewal of accreditation for Global Laboratory Services, Inc. for ISO 17025:2017 in cannabis testing. The laboratory, based in Wilson, North Carolina, becomes first cannabis testing laboratory accredited in that state by adding the industrial hemp testing to their chemical scope of accreditation.

According to Kim Hesse, business development manager at Global Laboratory Services, they plan to expand their services in the hemp market with additional types of hemp testing. “At Global Laboratory Services, we always strive to keep pace with industry needs,” says Hesse. “We saw the need for an accredited laboratory in the hemp industry and therefore added CBD and THC testing to our scope. Our next step is to expand our service offerings to include agrochemical analysis of industrial hemp.”

Adam Gouker, general manager at A2LA, says accreditation plays a vital role in the cannabis industry and its regulatory requirements. “We congratulate Global Laboratory Services on becoming the first cannabis testing laboratory accredited in the state of North Carolina, specifically for industrial hemp,” says Gouker. “A2LA realizes the vital role that accreditation plays in the cannabis industry to support compliance with regulatory requirements, and we are thrilled to see that our service has been adopted in a new state. We look forward to our continued relationship with Global Laboratory Services in the provision of their accreditation needs.”

Doctors & Researchers Push Medical Efficacy Forward at 10th IACM

By Marguerite Arnold
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It is easy to forget as one steps inside this world-class medical conference (held this year in Berlin), that cannabis is disputed as medicine anywhere in the world.

Inside a packed conference hall in an upscale hotel in East Berlin, international researchers presented evidence that when taken as a drug, this simple plant can make a world of difference to patients suffering from a range of illnesses.

There were also doctors who talked about prescribing this as medicine (even to children), with dramatic and affirming results (if not heart-warming pictures).

In sum, as always, the IACM is the best place to find facts if not evidence galore to convince even the most hard-boiled egghead that this drug works – and across a broad range of so far “other” drug-resistant medical conditions.

As a participant in the IACM said after the opening remarks on the very first morning, it is so easy to ask the question – “Why are doctors still so afraid of if not resistant to this drug?”

Medical efficacy is no longer an unanswered question…

For those seeking affirmation and evidence, this year’s IACM did not disappoint. There were presentations on the drug’s impact on neurological, oncological and inflammatory conditions that while not all new, are increasingly impactful in an aging planet.

A full house of attendees for the patients panel

But that is not all that was discussed. The broader implications of adding cannabis into skincare, diets and medicine chests were also presented – from cannabis’ impact on lowering obesity and positively affecting acne to impacting the opioid epidemic.

Also intriguing this year was a far-reaching study on how polluted the CBD supply chain is in Europe, even for non-medical and nutraceutical products. Not to mention a socio-political plea for legalization of personal use in South Africa.

And that was just the presentations from the stage and in the poster hall.

The conversations swirling around were just as interesting. Because of course, nobody at this three-day gathering, for all the normalization on display, did forget that this gathering of doctors, scientists, cannabis companies and patients is still an anomaly.

The fact is that there are still too few doctors prescribing. And too few trials. And too many fights over efficacy still in the room.

As Alice O’Leary Randall (wife and former partner in activism with her late husband, Professor Randall who initiated the medical efficacy fight in the U.S. in 1975 over glaucoma) said to Cannabis Industry Journal, “It is hard to believe that we are still fighting the same fights all over again.”

Another “AIDS” Crisis?

There is a more dramatic sense of urgency at the IACM than other conferences that focus just on the “business.” In part, this is because the conference is made up of not only doctors and researchers who fight to prescribe the drug or get trials funded, but also patients on the front lines in a country where the drug is supposed to be covered by health insurance.

Dr. Franjo Grotenhermen (seen on the table) and others during a panel discussion

The patient panel, as a result, was an international face of accusation: To national authorities who still refuse to mandate cannabinoid care – across Europe and beyond. To medical establishments who are not demanding cannabinoid treatment be made mandatory in hospitals and emergency rooms in every country in the EU and beyond. To individual doctors who refuse to come to such conferences, where, if they wanted to, could learn how to begin prescribing the “next penicillin.” To payers and insurers who are still too slow to pick up the message if not the tab.

Indeed, one of the best panels of the conference was a gaggle of doctors, led by Grotenhermen, who discussed the particulars of approaching a new drug – for the very first patient and first time.

Act Up, Speak Out, Silence Equals Death

As the conference wrapped up with its awards dinner, there was of course, a sense of needing to go home with not wanting this to end. For those in the thick of this multi-generational fight, there of course were words of encouragement to colleagues from the industry, internationally. But there was also a new sense of needing to up the pace, if not create faster change.

The battles are far from over – in fact, they are just beginning in many places. As one questioner said of a panel about halfway through the conference – “We need to pick up the fight the same way the AIDS community did on this drug.”

That remark perhaps means less today than it did 20 to 30 years ago when an embattled LGBTQ subculture was the organized point of the spear that fought the early state legalization battles as pioneers for a cause that sought equality as much as it sought a cure.

The plea did not fall on deaf ears.

In the midst of studies, statistics and scientific evidence, in other words, there was a new sense of a need for a renewed fight – and from the medical and scientific community as well as patients.

Risks of Bare Concrete Flooring in Cannabis Grow Rooms & Greenhouses

By Kendall Youngworth
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With legalization rapidly increasing across states, the cannabis market is exploding. And with estimates of sales in the billions, it’s no surprise that greenhouses and grow rooms are emerging everywhere. As growers and extracting facilities continue to expand one important consideration that most tend to underestimate, is how flooring can impact both their production and product. Bare concrete is often a popular choice in cannabis facilities, as there are typically very minimal costs−if any at all−associated with preparing it for use. However, concrete floors can pose unique challenges when left untreated, which could inadvertently create unforeseen problems and unexpected costs.

Understanding the Risks of Bare Concrete Flooring

Whether a facility is growing or extracting, the proper flooring can play a critical role in helping maintain optimal safety and sanitation standards, while simultaneously contributing to production. That’s why its important for growers and extractors to know and understand the potential risks associated with bare concrete.

Concrete is porous: While concrete is a solid material, people may forget that it is porous. Unfortunately, these pores can absorb liquids and harbor small particles that spill on the floor. They create perfect hiding places for bacteria and other pathogens to proliferate. Pathogens can then contaminate product within the facility, causing a halt on production, and/or a potential product recall. This can incur unexpected costs associated with shutdown time and loss of product.

Light-colored white or pastel floor surfaces in glossy finishes can help reduce the amount of energy needed to properly illuminate grow rooms.

Concrete can be damp: When in a facility with an untreated concrete floor, at times the slab can feel slightly wet or damp to touch. This is due to moisture within the concrete that can eventually work its way up to the surface of the slab. When this happens, items that are placed on top of the floor can be damaged by trapped moisture above the slab and below the object. When this happens, if a product is not protected properly, it can be damaged.

Concrete is dark and unreflective: An untreated concrete slab can often make a room feel dark and it does not reflect lighting within the room. This can result in the need for extra lights and electricity to properly grow cannabis.

Concrete lacks texture: When working in areas where water and other liquids can fall to the ground and accumulate, flooring with traction can play a key role in helping aid against slip and fall incidents. Untreated concrete typically does not provide sufficient texture and can become very slippery when wet.

The Benefits of Bare Concrete Flooring

While the previously mentioned risks can be associated with bare concrete flooring, there is an upside to the situation! Concrete is the perfect substrate for adding a coating that is built to withstand the industry’s demands.

Non-porous flooring options are impervious in nature, helping to isolate contaminants on the surface, thus enabling proper cleanup and disposal.

With the application of a fluid-applied or resinous floor coating, the risks of bare concrete flooring can be mitigated. There are a variety of resin and fluid-based coating systems that can be applied, such as:

  • Epoxy and Urethane Systems
  • Urethane Mortar Systems
  • Decorative Quartz Systems
  • Decorative Flake Systems

These durable coatings have numerous benefits and can offer:

  • Protection against the proliferation bacteria and other pathogens: Unlike porous concrete, a smooth and virtually seamless floor coating eliminates the little crevices where pathogens can grow. This in turn helps aid against the growth of bacteria, keeping hygiene standards at the forefront and grow rooms in full operations.
  • Protection against moisture damage: As moisture within the concrete can move upward to the surface of the slab, there are moisture mitigation coating systems, that keep it trapped below the surface, thus helping toprotect items placed on the floor.
  • Brighter spaces and light reflection: Installing a floor coating that is light in color, such as white or light gray, can help brighten any space. The benefits of this are twofold: First, it can help with visibility, helping employees navigate the space safely. Secondly, light reflectivity of the flooring improves lighting efficiency, resulting in fewer light fixtures and smaller electric costs.
  • Texture options to help aid against slip and fall incidents: Floor coating systems can offer a variety of texture options−from light grit to heavy grit−depending on how much accumulated water and foot traffic the area receives. Without additional texture in wet areas, slip and fall incidents and injuries are inevitable.
  • A wide range of colors and decorative systems: These coating systems can be designed to match the aesthetics of the building or corporate colors. Some manufacturers even offer color matching upon request. When it comes to colors, the options are virtually endless.

Choosing the Right Flooring: Considering Bare Concrete

Choosing the right flooring for a cannabis greenhouse or processing facility requires important consideration as every grow room and greenhouse is different. Bare concrete is a popular flooring option for manufacturing and processing facilities across industries, however, as discussed, it can pose unique challenges due to its innate nature. That said, by taking the right steps to ensure that the concrete substrate is properly sealed, it can then be an effective and hygienic flooring option, offering high durability and a longer life cycle.

aurora logo

Italian Government Cancels One of Aurora’s Licenses

By Marguerite Arnold
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aurora logo

Aurora has just faced a rare setback in Europe. The Italian government has cancelled one of three tender cultivation lots to supply Italian patients it granted Aurora this summer (in July).

Aurora was the only company to win the bid after other companies were disqualified.

For this reason, the high-level parliamentary attention to the bid this fall is even more interesting. Most foreign cannabis is being imported from the Netherlands and Bedrocan. While Wayland (ICC) and Canopy are in the country (Wayland has established production facilities for CBD in fact), Aurora was the only foreign Canadian cannabis company to actually win government issued, cultivation slots.

What Is Going On?

In July, Aurora won the Italian bid, beating out all other companies for all three lots.

aurora logoYet in September, the third lot, for high-level CBD medical flower, was cancelled by the Ministry of Defense which oversees cannabis importing and production, for an odd reason. Specifically, the lot was suddenly “not needed.”

As of October 31, the Minister of Health responded to parliamentarians who wondered about this administrative overrule by saying that the rejected lot (lot 3, for high-level CBD) was in fact rejected because stability studies to define the shelf life of products were not being conducted.

EU GMP Standards Are In The Room In Europe

This is not really a strange turn of events for those who have been struggling on the ground in ex-im Europe to learn the rules.

For at least the second time this year, and possibly the third, a national European government has called stability tests and the equality of EU-GMP standards into question. As Cannabis Industry Journal broke earlier this fall, the Polish government apparently called the Dutch government into question over stabilization tests (albeit for THC imports) during the February to September timeframe.

european union statesIt is still unknown if there is any connection between these two events although the timing is certainly interesting. Just as it was also interesting that both Denmark and Holland also seemed to be in sync this summer over packaging and testing issues in July.

Aurora and Bedrocan are also the two biggest players in the Polish market (although Canopy Growth as well as other international, non-Canadian cannabis companies are also making their mark).

What is surprising, in other words, is that countries all around Germany are suddenly asking questions about stability tests, but German authorities, still are notably silent.

Why might this be? Especially with German production now underway, and imports surging into the market?

Is This A Strange EU-Level CBD Recreational Play In Disguise?

There are no real answers and no company is talking – but in truth this is not a failure of any company on the ground, rather governments who set the rules. If there are any cannabis companies in the room at this point who are not in the process of mandating compliance checks including stability tests, it is the governments so far, who have let this stand.

Notably, the German government. Nobody else, it appears, is willing to play this game.

Further however, and even more interestingly, this “cancellation” also comes at a time when novel food is very much in the room in Italy. Namely, it is now a crime to produce any hemp food product without a license. There is no reason, in this environment, why a national cultivator could not also produce locally a high-quality, high-CBD product for the nascent Italian medical market.

While nobody is really clear about the details, there is one more intriguing detail in the room. The government may, in fact, allow medical cultivation now by third parties.

Multi-Element Analysis Using ICP-MS: A Look at Heavy Metals Testing

By Cannabis Industry Journal Staff
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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.

California Suspends Almost 400 Licenses

By Cannabis Industry Journal Staff
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On November 1st, the Bureau of Cannabis Control (BCC) sent notices to 394 businesses in California that their licenses will be suspended until they comply with certain traceability system requirements. This story was first reported by John Schroyer at Marijuana Business Daily.

On Wednesday, November 6th, the number of licenses suspended dropped to a total of 385, including 63 retailers, 61 delivery services, 47 microbusinesses, 185 distributors and 29 transportation licenses. That’s almost 5% of all the cannabis business licenses in California.

According to Alex Traverso, spokesman for the BCC, licensees were given plenty of opportunities to fix their errors. Businesses were given notice that they needed to enroll in Metrc within five days following their provisional licensing. The BCC gave those businesses a reminder roughly three months ago and sent an additional warning in late October regarding the deadline.

It’s a relatively easy fix for those trying to get back in compliance. The rationale behind suspending the licenses is that those businesses need to undergo a mandatory traceability system training so they know how to use Metrc and get credentialed. Enroll in the Metrc system, get credentialed and your license should be restored.

“It’s relatively simple to get your license out of suspension,” Traverso told KPBS News. “These are growing pains. I think we knew it was going to be a process and it was going to take some time, and that it was going to be an adjustment period for a lot of people who have been doing things one way for some time now.”

Traverso added that about 80 businesses enrolled in the Metrc system as soon as they received the notice that their license is suspended. Those licenses should be restored to active shortly, Traverso said.

Bremen Steps Up Its Cannabis Campaign As Other Groups Lobby For More Access

By Marguerite Arnold
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The German city of Bremen (perhaps you know it from the Brothers Grimm and the animal musicians) is determined to force the federal German government to play another tune when it comes to basic access within the city.

For those without the special geographic knowledge that comes with being a “local” this is also a deliberately strategic political move. Bremen, like Berlin, is a strange German hybrid, a city-state.

Change here, of course, like Berlin, would have wide impact on other German states.

It is not a new campaign of course. None of these city campaigns for home-grow really are. They are the result of efforts, at this point with elected officials involved, of literally decades of patient activists, who are still necessary. But this time, they have politicians involved. When the national ones don’t listen, the local ones are being dragged in.

That said, don’t expect any breakthroughs or miracles from Bremen or Berlin either right now for that matter. This experiment, in Bremen just like the country’s capital, is still at least several years off, no matter its regular recycling in news stories for the last several years.

The German city of Bremen
Image: Chaim Dönnewald, Flickr

Politically right now it is hard to understand the CDU’s continued reluctance to embrace the weed. The CDU is Germany’s strongest and largest “middle of the road” party. Particularly because they along with everyone else of alternative political persuasions are highly alarmed by the right wing AfD’s popularity and spread. It is not inconceivable that even Germany’s largest if not highly beleaguered party might use a little cannabis to stop that. And they are being pushed, hard now, by the fringes.

The Outpricing Of The Patient Movement

Talk to any cannabis-connected company right now and chances are you will hear the phrase “patient first.”

That means nothing in an environment where most patient groups are kept out of the room when legislation opening markets is being written (certainly in Europe). And of course, it is precisely the individuals that these groups represent who cannot afford the legal medication hitting the markets early.

Here, because of the focus on high-quality, GMP-certified product, the chances of a patient collective actually being able to afford a cultivation license (for example) are so far non-existent.

As a result, there is an active foment on the ground right now in almost every country in Europe. This is meeting other kinds of frustration right now and that can be a powerful weapon for change. However, without funded lobbyists in most European capitals and Brussels, there is more power and money behind the established industry right now to keep the (almost) status quo.

As strange as they seem to the cannabis industry right now, GMP certification is a standard pharmaceutical designation.

The boogeymen in the room right now, in other words, for every strong patient group, with its own grey market distribution channels, are the well-funded companies who are in fact getting the laws to change.

Patients, in these environs, as well as their concerns, are left out entirely.

The Strength of The European Gray Market

For this very reason, the gray market problem is going to be large in Europe for quite some time to come. Patients are effectively priced out of the legitimate market if they cannot get insurer approvals and for most that is still the biggest problem in the room.

Are there large gray market grows all over Europe? Yes. As one German activist told Cannabis Industry Journal recently, echoing the comments and practices of thousands of others, “Yes, they made me jump through the hoops, and I have packaging from all the big guys. That’s how I carry my home grow these days.”

Forget “patient cards” that some enterprising distributors are trying to get patients to carry.

The cops don’t challenge legit packaging. And every producer, distributor and patient knows that. Buy once, no matter how exorbitant, and that is all she wrote.

For that reason, “patient numbers” if not “sales” actually mean very little.

It does not matter, in other words, if a cannabis company announces its market entry in any country right now. What matters is that they can prove consistent supply and sales and real patient numbers – which if GDPR (European privacy legislation) is strictly followed, producers and distributors should never really know at a level that such sales are trackable per patient.

And that is where this all gets difficult down in the weeds.

Are there large gray market grows all over Europe? Yes. Are they all under the purview of the criminal black market? No. There are very organized patient non-profit networks locally in just about every city and town in Europe. If not other places.

And, where those fail, certainly in Germany, there is always the area around every local train station. If you are hard up enough and desperate enough, skunk and hash albeit of an indeterminate source, will cost you about $12 per gram.

There is no cannabis company in the room anywhere in Europe that can provide legit product via any pharmacy, for that price at point of sale. Yet. And therein, as always, lies the rub.