Tag Archives: hemp-derived

A Survey of State CBD & Hemp Regulation Since The 2018 Farm Bill

By Brett Schuman, Jennifer Fisher, Brendan Radke, Gina Faldetta
1 Comment

Since the December 20, 2018 enactment of the Agricultural Improvement Act of 2018, better known as the Farm Bill, we have seen a number of new state laws addressing both the legality of hemp and products derived therefrom, most noticeably cannabidiol, better known as CBD. This piece provides a brief overview of some of the more interesting state laws concerning hemp and CBD, as well as recent developments.

Legality of Hemp

Since the passage of the Farm Bill, the vast majority of states have legalized the cultivation and sale of hemp and hemp products. However, certain states maintain laws barring some or even most forms of hemp.

The most stringent of those states is Idaho, where hemp remains illegal. In March 2020, Senate Bill 1345 – legislation that would have allowed for the production and processing of industrial hemp – died in the House State Affairs Committee, due to concerns that legalizing hemp would be the first step toward legalizing “marijuana”; that the bill contained too much regulation and that it was otherwise unworkable. As a result, Idaho is currently the only state without a legal hemp industry. Hemp with any THC, even at or below the 0.3 percent threshold under the Farm Bill, is considered equivalent to “marijuana” in Idaho and is illegal (see below for a discussion of CBD in Idaho).

Indiana, Iowa, Louisiana, and Texas have enacted bans on smokable hemp. Indiana law prohibits hemp products “in a form that allows THC to be introduced into the human body by inhalation of smoke.” Iowa has amended its Hemp Act to ban products introduced to the body “by any method of inhalation.” Louisiana prohibits “any part of hemp for inhalation” except hemp rolling papers, and Texas law prohibits “consumable hemp products for smoking.”

Some of these bans have been challenged in court. In Indiana, a group of hemp sellers requested an injunction against the smokable hemp ban in federal court, on the grounds that the federal Farm Bill likely preempted the Indiana law. In September of 2019, the district court issued the requested injunction, but the U.S. Court of Appeals for the Seventh Circuit overturned that decision in July 2020, stating that the order “swept too broadly.” The Seventh Circuit noted that the 2018 Farm Bill “expressly provides that the states retain the authority to regulate the production of hemp” and remanded the case for further proceedings.

Similarly, in Texas, hemp producers have sued in state court over the smokable hemp ban, questioning its constitutionality and arguing that it would result in a loss of jobs and tax revenue for the state. According to those producers, smokable hemp comprises up to 50 percent of revenue from hemp products. On September 17, 2020, Travis County Judge Lora Livingston issued a temporary injunction blocking enforcement of the law until trial, which currently is set to commence on February 1, 2021. Judge Livingston had previously issued a temporary restraining order to that same effect.

State Laws Regulating CBD

State laws and regulation on hemp-derived CBD are varied, and the legality of a CBD product often comes down to its form and marketing.

FDAlogoAs an initial matter, it must be noted that notwithstanding the Farm Bill the FDA currently prohibits hemp-derived CBD from being be sold as dietary supplements, and food (including animal food or feed) to which CBD has been added cannot be introduced into interstate commerce. As discussed below, a substantial minority of states, including California, follow the FDA’s current position on the permissibility of putting hemp-derived CBD in food or dietary supplements.

Certain states include strict limitations on CBD, none more so than (once again) Idaho. Lacking any legal hemp industry, Idaho restricts CBD products to those having no THC whatsoever, rejecting the generally accepted threshold of not more than 0.3 percent THC. Idaho law also requires that hemp CBD be derived only from “(a) mature stalks of the plant, (b) fiber produced from the stalks, (c) oil or cake made from the seeds or the achene of such plant, (d) any other compound, manufacture, salt, derivative, mixture, or preparation of the mature stalks, or (e) the sterilized seed of such plant which is incapable of germination.”

Kansas similarly prohibits CBD with any amount of THC, though the law is murkier than Idaho’s. While Senate Bill 282 allowed possession and retail sale of CBD effective May 24, 2018 by removing CBD oil from the definition of “marijuana,” this was broadly interpreted to apply to THC-free CBD only. Later legislation, Senate Substitute for HC 2167, effective July 2019, allowed the farming of hemp with THC levels aligned with the Farm Bill definition (i.e., 0.3 percent THC or lower), but expressly prohibited the use of industrial hemp in: cigars, cigarettes, chew, dip, or other smokeless forms of consumption; teas; liquids for use in vaporizing devices; or “[a] ny other hemp product intended for human or animal consumption containing any ingredient derived from industrial hemp that is prohibited pursuant to the Kansas Food, Drug and Cosmetic Act or the Kansas Commercial Feeding Stuffs Act,” though this final section provides that “[t] his does not otherwise prohibit the use of any such ingredient, including cannabidiol oil, in hemp products,” the law’s only reference to CBD. The Kansas Bureau of Investigation has reportedly made statements indicating that CBD with any level of THC remains illegal.

Just some of the many hemp-derived CBD products on the market today.

Mississippi only recently legalized the cultivation of hemp via Senate Bill 2725, the Mississippi Help Cultivation Act, which was signed into law on June 29, 2020. House Bill 1547, passed on April 16, 2019, imposed content requirements upon CBD products within Mississippi: to be legal in Mississippi, a CBD product must contain “a minimum ratio of twenty-to-one cannabidiol to tetrahydrocannabinol (20:1 cannabidiol:tetrahydrocannabinol), and diluted so as to contain at least fifty (50) milligrams of cannabidiol per milliliter, with not more than two and one-half (2.5) milligrams of tetrahydrocannabinol per milliliter.” Moreover, CBD products produced in Mississippi must be tested at the University of Mississippi’s lab. However, subject to these restrictions, Mississippi allows the sale of CBD products, including edibles, contrary to the restrictions of many of states considered friendlier to hemp.

Perhaps more surprising is Hawaii, which restricts the sale and distribution of CBD, aligning with the FDA’s guidance. In Hawaii it is illegal to add CBD to food, beverages, as well as to sell it as a dietary supplement or market it by asserting health claims. It is also illegal to add CBD to cosmetics, an uncommon restriction across the many states with CBD-specific laws and regulations. Unlike Idaho and Mississippi, which have no medical marijuana programs, Hawaii has long legalized marijuana for medical purposes and in January 2020 decriminalized recreational possession. Hawaii very recently enacted legislation allowing the production and sale of cannabis-infused consumable and topical products by medical cannabis licensees effective January 1, 2021, but this legislation did not address CBD. Given the foregoing, Hawaii’s restrictions on CBD stand out.

The structure of cannabidiol (CBD), one of 400 active compounds found in cannabis.

Beyond broad CBD restrictions, many more states prohibit the use of CBD within food, beverages, or as dietary supplements. For instance, twenty states – including California, Georgia, Illinois, Massachusetts, Michigan, New Jersey, New York, and Washington – prohibit the sale of CBD in food or beverage. In California, a bill to overhaul California’s hemp laws, Assembly Bill 2028, failed when the legislative session concluded on August 31, 2020 without a vote. AB 2028 would have allowed CBD in food, beverages, and dietary supplements (though, interestingly, it would have banned smokable hemp). As a result, California remains a relatively restrictive state when it comes to hemp-derived CBD, notwithstanding the legality of recreational marijuana.

New York allows the manufacture and sale of CBD, but requires CBD products to be labeled as “dietary supplements.” This mandate conflicts directly with the FDA’s position that CBD products are excluded from the definition of a dietary supplement. Further, despite the state’s categorization of CBD products as dietary supplements, New York prohibits the addition of CBD to food and beverages. These regulations have resulted in a confusing landscape for retailers and manufacturers in the Empire State.

Several states also have labeling requirements specific to CBD products. Batch numbers and ingredients are ubiquitous, but an increasingly common requirement is the inclusion of a scannable code that links to specific information about the product. States imposing this requirement include Florida, Indiana, Texas, and Utah. Indiana is viewed as having one of the more comprehensive labeling requirements for CBD products – or, depending upon your perspective, the most onerous.

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

By Cannabis Industry Journal Staff
No Comments

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.