Cannabis strains with high levels of cannabidiol (CBD) typically have higher levels of cannabidivarin (CBDV) as well, but accurate quantitation of both compounds for potency and strain ID is a must, especially as interest in using CBDV as an anticonvulsant and anti-nausea treatment continues to rise. Restek now offers a stand-alone CBDV reference standard—in addition to CBD and a host of other compounds—to help labs with the comprehensive analysis of cannabis products.
Restek’s CBDV standard is ideal for creating multipoint (5-point minimum suggested) calibration curves for LC-MS/MS. With verified composition and stability, this prepared stock product eliminates the need for in-house standards preparation for greater convenience and lower labor requirements. As a U.S. DEA-exempted formulation, no additional customer permits or licensing are required to purchase within the U.S., and because it’s manufactured and QC tested in Restek’s ISO-accredited labs, this new CBDV standard qualifies as a certified reference material (CRM) that satisfies your ISO requirements.
For CBDV, CBD, and other cannabis reference standards, along with the expertise and consumables your lab needs, turn to www.restek.com/cannabis
New and improved, Restek’s electronic leak detector lets you pinpoint small gas leaks quickly and accurately before they cause bigger problems. Now, there’s no more waiting for a full charge—the unit can be operated during charging or used up to 12 hours between charges. This compact, handheld instrument detects a broad range of laboratory gases and indicates leak severity with both an LED display and audible tone. In addition, it comes with a flexible charging kit that includes both a universal AC power adaptor and a USB charging cable so you can charge anywhere, anytime. Using a Restek electronic leak detector to ensure all critical seals in the GC system are leak free is an easy way to prevent costly downtime, waste, and damage.
Restek first launched solid phase microextraction (SPME) automated sample preparation fibers to reduce sample handling and solvent consumption in many industries, such as environmental, food, and clinical. Soon after came rugged Restek PAL SPME Arrows, a revolution in microextraction that combines exceptional robustness with faster extraction times and trace-level sensitivity. Now, both fiber and Arrow lines are being expanded, including the addition of a sought-after triple-phase offering.
Of significant interest to many analysts, new triple-phase SPME fibers and Arrows provide exceptional versatility. This divinylbenzene (DVB)/carbon wide range (WR)/polydimethylsiloxane (PDMS) combination can be used for quick and efficient extraction of a wide range of both volatiles and semivolatiles, and it is an excellent choice for decision-making during method development because it combines the characteristics of three popular phases.
Restek’s full SPME line of fibers, Arrows, and accessories can be found at www.restek.com/SPME
Low-level detection of carbon monoxide (CO) and carbon dioxide (CO2) is critical for many applications. Restek’s methanizer (CH4izer) allows ppb-level determination of CO and CO2 using a cost-effective FID instead of more expensive instrumentation. Up until now, the methanizer was only available for Agilent GCs, but Restek has just released a version of the methanizer for Thermo TRACE 1300/1310 GCs that features the same benefits to your lab as the original model.
The methanizer is factory set to 380 °C to ensure efficient and complete conversion of CO and CO2 to CH4, but the operator can easily adjust the temperature as desired with the touch of a button. This unit controls temperatures precisely and reliably to within ± 1 °C of the defined set point and the actual temperature is shown in real time on an easy-to-read display. The Restek methanizer is less cumbersome than other models and is designed for easy installation and fast catalyst tube replacement, so you spend more time analyzing samples and less time on maintenance.
Whether you run an Agilent or a Thermo TRACE 1300/1310, the methanizer you need is now available at
Restek’s support for cannabis-testing labs continues to grow. This latest offering will help you meet the specific cannabis analysis needs of California set forth by the Bureau of Cannabis Control for regulated category I and II residual pesticide reporting—and of other states with similar regulations/programs. Ideal for creating multipoint (5-point minimum suggested) calibration curves for GC- and LC-MS/MS, these six mixes of prepared stock standards also eliminate the need for in-house standards preparation. And, as with all certified reference materials (CRMs) manufactured and QC tested in Restek’s ISO-accredited labs, they will satisfy your ISO requirements.
Order today at www.restek.com/cannabis
Restek’s ever-growing selection of cannabis reference standards has expanded again with a new cannabigerolic acid (CBGA) CRM. This certified reference material (CRM) is U.S. DEA exempt, so there’s no need to purchase costly neat materials, make your own standards, or deal with DEA forms and registrations. Verified in composition and stability, this CBGA standard is ideal for combining with other Restek cannabinoid CRMs for quantitative potency analysis using the Raptor ARC-18 LC column. And like all Restek certified reference materials (CRMs), it is manufactured and QC tested in ISO-accredited labs to satisfy your ISO requirements.
Your CBGA standard is in stock now at www.restek.com/catalog/view/54064 You can also find it, along with the rest of Restek’s cannabis analysis solutions, at www.restek.com/cannabis
Resprep EPH fractionation SPE cartridges offer method-specific performance for extractable petroleum hydrocarbon (EPH) analysis of soil and water samples. These high-performing SPE cartridges completely separate aliphatic and aromatic compounds into distinct fractions, and they are guaranteed to produce background levels under the strict reporting limits of MA and NJ EPH methods. Our standard 5 g format cartridges are now joined by 2 g format cartridges made from the same high-quality silica. While the 5 g cartridges are recommended when higher loading capacity is required, the new 2 g cartridges are ideal for automated systems or when time-saving and solvent reduction are desired. As always, our rigorous QC testing and moisture-resistant packaging ensure storage stability and consistent lot-to-lot performance.
Per-and polyfluorinated alkyl substances (PFAS) are often used in tubing and other liquid-contacting parts of an HPLC system, where they can leach into the mobile phase and interfere with sample analysis. This contamination is particularly problematic when analyzing at trace levels, such as at the ppt health advisory levels for drinking water. With many labs analyzing at single-digit ppt levels and striving for sub-ppt level detection, PFAS contamination from HPLC components can prevent accurate identification and quantitation of PFAS in samples. To eliminate this issue, Restek’s new PFAS delay column traps and “delays” system-related PFAS, preventing them from interfering with sample analysis. This delay column is a universal solution that can be used with any type of HPLC or UHPLC system up to 15,000 psi (1034 bar) and with any analytical column (fully porous or superficially porous).
Keep your organochlorine pesticide GCs up and running by protecting them against matrix components with superior sample cleanup. Resprep CarboPrep Plus SPE cartridges surpass traditional Florisil products in cleanup power for sample matrix compounds that cause active sites in GC inlets and columns, degrading pesticides and interrupting work due to failed calibration checks. For CarboPrep Plus cartridges, Restek uses a proprietary treatment to create an exceptionally clean carbon that exhibits consistent selectivity. The end result is a reliable sample preparation product that does not contribute interfering background signal and does not need to be evaluated lot to lot to see if elution volumes need to be adjusted. In addition, CarboPrep Plus cartridges are designed to use the same equipment, solvents, and solvent volumes as a traditional Florisil cleanup procedure, minimizing the impact of switching on sample prep labs while maximizing the performance benefit to analytical labs.
New RAVEqc quick-connect air valves from Restek are a tool-free alternative to bellows/diaphragm valves that reduce the time and variability associated with connecting air canisters to other devices. Standard bellows/diaphragm valves rely on compression fittings to connect air cans to flow controllers, autosamplers, cleaners, and other equipment commonly used to collect and analyze air samples. While compression fittings are tried-and-true, they also require more time and greater skill to ensure the connections are not overtightened, cross threaded, or leaking, which can cause damage, reduce valve lifetime, and result in sample loss.
RAVEqc quick-connect air valves eliminate that risk by providing a means of making the connection and opening the valve in one tool-free, consistent process that means anyone and everyone can successfully use them. Whether you need to replace your existing bellows/diaphragm valves or want the extra security of using two valves in tandem to better protect your samples, RAVEqc quick-connect air valves are a tool-free, easy-to-use option that will make air sampling and analysis much easier.