Tag Archives: residual solvents

Nevada Cannabis Lab License Suspended

By Aaron G. Biros
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Last month, G3 Labs LLC, a Las Vegas-based cannabis-testing lab, had their license suspended for an unknown regulatory compliance issue. According to Stephanie Klapstein, spokeswoman for the Nevada Department of Taxation, the reason why their license was suspended is confidential. “We can’t disclose the details of the suspension, including anything about penalties,” says Klapstein.

When asked about the license suspension, Klapstein told us it was a compliance issue, but could not go into detail. “I can confirm that we did suspend G3’s license for compliance issues,” says Klapstein. “We are working with them to bring them back into compliance. In the meantime, they cannot operate.” Klapstein told the Las Vegas Review-Journal that the Nevada Department of Agriculture tested cannabis samples from the lab to determine if there was a need for a recall. She also confirmed with us that the compliance issue does not necessitate any product recalls.

According to the Las Vegas Review-Journal, this is the first time a cannabis business license is suspended in the state since the beginning of adult-use sales back in July of this year. Nevada’s cannabis regulations require independent lab testing of products before they reach shelves. That required testing includes checking for potency, microbials, pesticides, residual solvents, moisture content, growth regulators, Mycotoxins and foreign matter.

When we reached out to G3 Labs, they did not immediately respond to a request for comment.

Dr. Chao-Hsiung Tung, lab director at G3 Labs, told the Las Vegas Review-Journal that they couldn’t comment, based on advice from their legal counsel. “G3 Labs is actively sorting out the issues with the Department,” Dr. Tung told the Review-Journal in an email.

EVIO Labs Expands To Florida

By Aaron G. Biros
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Currently, there are no lab testing regulations for Florida’s medical cannabis market. Chris Martinez, co-founder and chief operating officer of EVIO Labs Florida, a veteran-owned business, is looking to change that.

Chris Martinez, co-founder and chief operating officer of EVIO Labs Florida

When Martinez co-founded EVIO Labs Florida, he saw the need for a dedicated cannabis lab to ensure safety and quality of medicine for patients in the state. Partnering with EVIO Labs to accomplish this goal, Martinez secured a 5,500 sq. ft. facility in Broward County to test for potency, pesticides, microbial contaminants, terpenes, residual solvents and heavy metals. Their lab, a first of its kind in the industry, qualifies as a true pharmaceutical-grade clean room. This week, Martinez also secured their 2nd laboratory location in the City of Gainsville, where they will test for potency, microbials, terpenes and residual solvents. And he isn’t doing it on the cheap. “Our Broward lab is powered by Shimadzu with over $1.2M in the latest testing equipment utilizing LCMS technology with the world’s fastest polarity switching time of 5 m/sec and scan speeds of 30,000 u/sec with UF Qarray sensitivity 90 times that of previously available technologies,” says Martinez.

Martinez, an entrepreneur at heart, started the lab with a team of experts to become the first completely cannabis-focused laboratory in Florida. Jorge Segredo, their head chemist and quality assurance director, has over 18 years of experience in the development of nutraceutical and pharmaceutical products under ISO and FDA accreditation. Segredo has helped launch three independent FDA-accredited laboratories and has extensive knowledge of HPLC, GCMS, LCMS, ICPMS technologies and development/validation of testing methods and procedures. Cynthia Brewer, their director of operations, was an active participant in the 2017 state legislative session and has been an advocate for medical cannabis, working with legislators on a suitable framework to increase patient access to cannabis.

The EVIO team is using instruments from Shimadzu

EVIO is one of the nation’s leaders in cannabis testing, research science and advisory services. It is an evolving network of laboratories with nine EVIO cannabis laboratories operating in five different states: Oregon, Colorado, Massachusetts, Florida and California. “After speaking with industry chemists around the country for months, the EVIO name was constantly brought up in conversation,” says Martinez. “When we spoke with the EVIO Team it was an easy decision for us to partner.” He says Lori Glauser, chief operating officer of EVIO, and William Waldrop, chief executive officer of EVIO, are truly visionaries in the cannabis industry.

According to Martinez, their licensing agreement with EVIO Labs (OTC:SGBYD) marked a first for the publicly traded company with exclusivity in the Florida market. The agreement includes proprietary testing methodologies, operating procedures, training and support.

In addition to testing cannabis for safety and quality, they are launching a technology platform called MJ Buddy, essentially a software tool that takes efficacy feedback from patients and uses testing and genetic data they gather from EVIO Labs across the country. “This will provide real data to the cannabis industry as to the medical benefits for thousands of patients in relation to the genotype and cannabinoid profiles of their medicine,” says Martinez.

Of the states that have legalized some form of cannabis, a large number of them have some lab testing regulations on the book, with some more comprehensive than others. Martinez says he hopes the Florida Department of Health, Office of Medical Marijuana Use follows some of the more thorough state programs, such as Oregon. His team has compiled a set of documents for regulators with recommendations for regulating the lab testing industry.

Without any regulations on paper, it is up to businesses to produce safe and quality medicine, without any oversight. EVIO Labs Florida follows FDA Good Laboratory Practices, has an ISO 17025:2005 accreditation pending, and is working on TNI 2016 accreditation.

When discussing what he wants to see happen with Florida’s regulatory framework, Martinez says the rules need to be specific to Florida. For example, due to the climate being so humid, microbial contaminant testing for things like yeast and mold will be particularly imperative. Because processing methods like butane and alcohol extraction are legal, he emphasizes the need for comprehensive residual solvents testing. “The most important regulation would be to have the laboratories select the samples at the MMTC facility and have the state randomly verify laboratory results to ensure accurate unbiased testing,” says Martinez.

In addition to that, he hopes their pesticide thresholds will be realistic and based on actual science. “We believe the public should receive carcinogenic data for products that are inhaled,” says Martinez. “Chemicals may be introduced into the processing of cannabis to vape liquid that may cause harm. This is important information for public health and communication of the risk related to exposure to such materials.” Martinez says EVIO Labs Florida was founded on the belief that through technology and science we can increase safety and patient outcomes.

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Colorado Approves Emerald Scientific Proficiency Tests for Regulatory Compliance in Cannabis Testing

By Aaron G. Biros
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Emerald Scientific recently announced their proficiency-testing program, The Emerald Test, has been approved by Colorado as a third party provider for proficiency testing in licensed cannabis laboratories. The Emerald Test, held twice annually, is an inter-laboratory comparison and proficiency test (ILC-PT), allowing data to be collected pertaining to the performance of laboratories on a national scale. Proficiency testing is designed to measure how accurately laboratories perform and is a critical tool for quality assurance.

Colorado requires labs to participate in a proficiency-testing program in order to be certified to conduct required testing on cannabis and cannabis products for safety and quality. According to the press release, Colorado’s Marijuana Enforcement Division, under the Department of Revenue, conducted an evaluation process to determine which applicants could meet the performance standards for regulatory compliance concerning proficiency testing. The contract was awarded to Emerald Scientific following this evaluation process.

emerald test retailAccording to Ken Groggel, director of the Proficiency Testing Program at Emerald Scientific, a number of states have recognized the need for independent proficiency testing as a required piece of regulatory compliance. “The Emerald Test Inter-Laboratory Comparison/PT is state approved in Washington & Colorado for cannabis testing laboratory licensure,” says Groggel. “States with cannabis or hemp production, as well as labs in other countries are now actively participating in the Emerald Test as a tool for quality improvement, efficiency upgrades and product safety.” He says the Colorado Marijuana Enforcement Division has contracted with Emerald Scientific to provide third party PT programs for microbial contaminants, residual solvents and pesticides.

Ken Groggel, director of the Proficiency Testing Program at Emerald Scientific

Beginning in 2014, The Emerald Test has been offered twice a year and, in 2017, over 50 labs participated from 14 states and 2 countries. “Laboratories that have enrolled more than once have seen significant improvement in their results, an indicator of improved performance for industry customers,” says Groggel.

Proficiency testing is important for ensuring quality, safety and product content accuracy. “This should be the priority whether you are a grower, manufacturer, testing laboratory, regulatory entity, medical patient or adult use consumer,” says Groggel. It also helps labs meet regulatory requirements and achieve ISO 17025 accreditation. “Independent proficiency testing helps determine if the lab is able to deliver the services marketed to its customers,” says Groggel. “Regulatory agencies can use this information when licensing, monitoring & enforcing good science for public safety.”

As new states legalize cannabis and develop consumer protection regulations, proficiency testing programs can help labs demonstrate their commitment to responsible and accurate testing. “When PT results show the cannabis testing lab is capable it is up to the government to ensure accountability for performance on behalf of all its citizens,” says Groggel. Labs can enroll starting on September 25th in the Fall 2017 Emerald Test ILC/PT.

Steep Hill Hawaii Launches, Receives ISO 17025 Accreditation

By Aaron G. Biros
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Spectra Analytical LLC, doing business as Steep Hill Hawaii, was the first cannabis-testing laboratory to be licensed by the State of Hawaii and opened for business on August 1st. Today the lab announced they received ISO 17025:2005 certifications in biological and chemical testing from Perry Johnson Laboratory Accreditation, Inc., according to a press release.

Dana Ciccone, chief executive officer of Steep Hill Hawaii, has been a patient advocate and leader in cannabis education in Hawaii, as well as a member of the Hawaii Medical Marijuana Dispensary Task Force, an organization formed by the University of Hawaii College of Social Sciences Public Policy Center to develop regulations for the state. “We are proud not only to be the first cannabis lab to be licensed in the State of Hawaii, but also now the first lab to achieve ISO certification as well,” says Ciccone. “Industry businesses, medical professionals, state regulators, and patients can be confident that our lab and its testing standards will operate to the highest international standards.”

According to the press release, the laboratory will offer services for testing cannabinoid profiles (potency), terpenes, pesticides, heavy metals, biological screening, and residual solvents, testing for 17 Cannabinoids and 43 terpenes. The release states they are locally owned and operated, providing testing services for not just industry businesses, but in-state card-holding patients as well.

“This is a turning point for the industry – we have moved very quickly to raise the industry standards in Hawaii to internationally recognized certification,” says Ciccone. “I am very proud our scientific team for the professionalism and hard work they put in to achieve this certification.”

The Emerald Test Yields Positive Results for Cannabis Labs

By Aaron G. Biros
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Emerald Scientific recently announced results for their latest round of the semi-annual Inter-Laboratory Comparison and Proficiency Test (ILC/PT), and the outcomes may bode well for one of the most vital quality and safety aspects of the cannabis industry. According to Cynthia Ludwig, director of technical services at the American Oil Chemists’ Society (AOCS), there are no official methods for cannabis testing from an internationally recognized non-profit organization known to provide ‘official methods’ to various industries, so method validation needs to be done in-house, which is very costly and time-consuming. Cannabis testing labs are charged with the difficult task of providing honest, consistent and accurate results for potency, pesticide residue, residual solvents and contaminants. AOCS partnered with Emerald Scientific in this round of ILC/PT and preformed the statistical analysis and reports. For the first time in The Emerald Test’s history, participants were able to review all of the raw data and were given a consensus mean, z-scores and kernel density plots in order to compare themselves to other participants.emerald test retail

rsz_emerald-scientific_letterhead-1Emerald Scientific’s ILC/PT program measures how accurately a cannabis lab performs along with comparing it to other labs for an indicator of variability and ways to improve, according to a press release. 46 cannabis laboratories participated in The Emerald Test’s latest round of proficiency testing for potency and residual solvents. Cynthia Ludwig sits on the advisory panel to give direction and industry insights, addressing specific needs for cannabis laboratories. Kirsten Blake, director of sales at Emerald Scientific, believes that proficiency testing is the first step in bringing consistency to cannabis analytics. “The goal is to create some level of industry standards for testing,” says Blake. Participants in the program are given data sets, judged by a consensus mean, so labs can see their score compared to the rest of the cannabis testing industry.

Steep_Hill_Washington_2016_Spring_Emerald_Test_Potency_award_badgeProficiency tests like The Emerald Test give labs the ability to view how consistent their results are compared to the industry’s results overall. According to Ludwig, the results were pleasantly surprising. “The results were better than expected across the board; the vast majority of labs were within the acceptable range,” says Ludwig. The test is anonymous so individual labs can participate freely. “The overall performance of the participating labs in the Potency and Solvent Residue Emerald Test were very encouraging,” says Ludwig. “All but a couple of labs had the majority of their results fall within two standard deviations of the consensus mean, which is generally accepted as being within the acceptable limits to most evaluators.” Although requirements for labs testing cannabis differ in each state, Ludwig says the results show the ability of these labs to competently perform the tests and generate reliable results. “Given the lack of harmonized regulations, this is a testament to the self-imposed quality standards the industry is trying to achieve.”

Reggie Gaudino, Ph.D., vice president of scientific operations and director of genetics at Steep Hill Laboratories. (photo credit: Preston Gannaway)
Reggie Gaudino, Ph.D., vice president of scientific operations and director of genetics at Steep Hill Laboratories. (photo credit: Preston Gannaway)

Among the laboratories that participated, Steep Hill Laboratories joined the test at two of their locations. Reggie Gaudino, Ph.D., vice president of scientific operations and director of genetics at Steep Hill Laboratories, believes that tests like the Emerald Test ensure that the cannabis labs are performing their function to the best of their ability, which is extraordinarily important. “We, and not just Steep Hill, but all testing labs, are the custodians of quality and safety for the cannabis industry,” says Gaudino. “If we are not doing our best to ensure the quality of our science is beyond reproach, then we are failing the consumer; if even one person gets sick or dies because a lab cut corners and tried to make extra money, that is one person too many.” Accurate testing comes from internal and external proficiency testing.

According to Gaudino, how cannabis labs perform in The Emerald Test can affect every aspect of cannabis consumption: “Correct dosing from potency analysis reports, identification of as many, if not all, active compounds known to enable the consumer to make a determination as to which strain, edible or concentrate would be most beneficial and assurance that there are no harmful chemicals or biological contaminants on cannabis or cannabis derivatives; all of it stems from being able to accurately test.” Gaudino is a major proponent of The Emerald Test because it provides some measure of consistency and accuracy in the cannabis industry. Until more consistent regulations for cannabis testing are formed on a national scale, self-imposed quality standards such as The Emerald Test helps labs, growers and consumers know they are getting reliable data.

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BEST Extractions

Defining BEST Extraction

By John A. Mackay, Ph. D.
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Over the next few months, I would like to walk through a series of articles to cover the number of ways to extract potentially pharmaceutically active compounds from cannabis plants. However, in the first article I would like to review concerns being addressed in state regulations: contamination in concentrates with pesticides, mycotoxins, and residual solvents. The next article will cover the most common extraction with two different modes: CO2 versus hydrocarbons.

Currently, there is a lot of focus on the cannabis strain of hemp. This is defined as having less than 0.3% of THC, (the psychoactive compound). To be clear, the science of extraction is eons old, but the current revitalization is due to new scientific inquiry regarding the applications of the cannabis plant.

I am often asked, “What is the ‘best’ extraction for a natural product?” The BEST extraction? The key to this answer is that you must assume unintended consequences until you can prove that they are at least minimized compared to the intended consequences.

I have a suggestion for you to consider and I look forward to your response to it. I also assume the right to adapt and revise it.

Botanical integrity from seed to shelf

Efficacy of the process beyond efficiency, economics, effectiveness

Safety of people and product

Testing for confirmation at each step of process

The hemp industry has changed significantly over the past few years. Just casually flipping through the channels on television, reading a newspaper or magazine, (on any topic – news, business, sports, food and science) and there is some facet of hemp’s value being examined. The reduction of traditional pulmonary intake (smoking) in the legal marketplace can be tracked by sales of these products in the states where it is legal. The balance of ingestion is drastically tipping toward what might still be considered smoking with vaporizer products as well as toward edible consumables. The ingredients in these products come not from just adding the plant to the formulation, but rather a concentrated mixture. This is the difference between adding a raw vanilla and a teaspoon of vanilla extract. The compound getting the most coverage is cannabidiol (CBD), which is the compound derived from cannabidiolic acid (CBDA). The effects of the other compounds in the plant are being studied as well.

Unintended consequences from the concentration – extraction – are something we need to consider seriously as consumers. The labeled use of “natural” is one that is critical, but can be totally nullified by the unintended contamination in the extraction workflow. Years of making sure the hemp adheres to strict growing environment can be destroyed in seconds with the addition of polycyclic aromatic hydrocarbons (PAH’s) by the use of solvent that has these toxic chemicals in them. These come not through intended consequences, but not knowing the stabilizers and other additives in material being added to these previously pure plants.

What if I pour sour milk on a natural granola for breakfast? What if I use water with high lead or contaminated water to pour over natural coffee grind? Not a great way to start the day, but it is no different than using the most premium hemp and unknowingly adding low grade solvents or adding components from cleaning the surfaces of instruments that come in contact with hemp.

Note that, by definition, we are concentrating the material from the hemp plant. From 4,000 grams, we are getting 400 grams of CBDA if it is 10% by weight (and later converted to CBD). That compound is 10 times more concentrated in a solution. What other compounds are now also 10 times or 5 times or 100 times more concentrated? Maybe no “bad” ones, but how do you know that something else is not also in the mixture?

figure1 extract
Figure 1. With each step of concentration of the green balls, so it could be with other components in the mixture.

This is illustrated in the filtering of green balls in Figure 1. As the green balls become a greater and greater percentage of the solution, it is possible that other compounds like pesticides are also increasing in percentage of the extraction solution. The solution is more concentrated and “simpler” versus all of the other things in the original mixture.

The simple answer is in the testing of the components. The labeling of major compounds is only the beginning of what is on the label that you read. Heavy metals? PAH’s? Residual solvents? Pesticides? Molds? And a long list of other material that could come into the process after the plant left its pristine organic farm. Many studies can be read about slip agents in bags, contamination from workers in the workflow, and other sources of inconsistency.

There are a significant number of companies that I have seen that take this very seriously. New companies are being formed that have safety of product at the top of the list of importance. They are building facilities that are sterile and putting standard operating procedures in place that continually test the product along every step to ensure that they are in compliance.

ecxtractionfig2
Figure 2. Science and economics merge when considering all the possible uses of concentrated compounds to final product formulations

Supercritical fluid extraction is GRAS (generally regarded as safe). It is, only as long as the solvent specifications are known, the vendor meets those standards, and the instrument surfaces meet any necessary standards.

Supercritical carbon dioxide is used to clean surfaces of electronics and bones for skin grafts. It is used for the decaffeination of coffee as well as pulling trace amounts of pesticides from soil. It is used to extract antioxidants from krill and the active ingredients from algae as well as oil from core samples deep below the earth. It also extracts the terpenes and CBDA from hemp – as well as possibly anything that has been added to it.

The key take away from this article is to know the BEST extraction.

Botanical integrity from seed to shelf

Efficacy of the process beyond efficiency, economics, effectiveness

Safety of people and product

Testing for confirmation

Taking each of these into consideration will bring the best results for concentrations of hemp products. I hope you can extract the best from your day.