May 6th 2025
This article will briefly introduce GC splitless inlet anatomy and show a simple example for how optimizing injection type and volume, initial GC oven temperature, and extract dilution can improve GC peak shape.
Delineating the Nuts and Bolts of the USDA’s Hemp Testing Rules
February 1st 2023This article addresses the US Department of Agriculture’s hemp testing rules and what laboratories should know regarding hemp testing. The author provides a short tutorial for laboratories and includes a section how laboratory information management systems (LIMS) can help.
Cannabis Cultivation Quality Assurance 2.0: Starting Clear, Staying Clean
February 7th 2022This article outlines why multiple testing modes are important, what to look for in third party test providers, and how a cultivator can evaluate these potential providers both at the outset and in an ongoing manner for accuracy and reliability.
Laboratory Accreditation: Is It Enough to Guarantee Your Samples Are Analyzed Correctly?
September 20th 2021The inter-laboratory variation problem still exists, which means laboratory certification is necessary, but not sufficient to guarantee your samples are analyzed properly. Here, Smith offers suggestions to help improve the situation.
Sample Prep for Cannabis Made Easier
October 1st 2020In this interview, Jeffrey Williams the CEO of Exum Instruments discusses the details of how laser ablation laser ionization-time of flight-mass spectrometer (LALI-TOF-MS) is set to solve some of the many of the issues involved in sample preparation for the cannabis industry.
Pesticide and Mycotoxin Analysis: Mastering the Complexity of the Cannabis Matrix
February 28th 2018The method described here allows for the simultaneous analysis of 47 pesticides and five mycotoxins in cannabis in one simple QuEChERS procedure. This simple method is designed for implementation in start-up laboratories and in established laboratories that wish to streamline their sample preparation process, decrease solvent usage, and obtain accurate and fast results.