Pesticides

Articles

Dr. Anthony Macherone of Agilent Technologies discusses what he hopes to see change in the future regarding cannabis regulations and testing guidelines.

Dr. Anthony Macherone Calls for More Comprehensive Pesticide Testing for Safer Consumer Cannabis Products

Todd Statzer, the Vice President of Environmental Sciences at urban-gro, offers some tips for pesticide use in cannabis cultivation.

Best Practices for Pesticide Use in Your Cultivation Facility

Here we discuss the ways in which chemical pesticides interact with plant physiology.

Back to the Root-The Role of Botany and Plant Physiology in Cannabis Testing, Part II: Plant-Pesticide Interactions and Plant Defense 

is a Senior Scientist at Agilent Technologies and a Visiting Professor at The Johns Hopkins University School of Medicine in Baltimore, Maryland.

A study using LC-qTOF, GCqTOF, and GC–MS/MS to evaluate the selectivity of a model pesticide commonly found in regulatory target lists.

Up in Smoke: The Naked Truth for LC–MS/MS and GC–MS/MS Technologies for the Analysis of Certain Pesticides in Cannabis Flower

Patricia Atkins is a Senior Applications Scientist with SPEX CertiPrep and a member of both the AOAC and ASTM committees for cannabis.

Laboratories are challenged with highly regulated and difficult sample schematics, sample preparation, extraction, and testing procedures that try to ensure accuracy and precision of testing. Accuracy in analytical testing starts at the very beginning with sampling and sample preparation prior to testing.

Right From the Grow: A Look at Sampling and Sample Preparation Methods of Solid Cannabis for Analysis

Brian C. Smith, PhD, is Founder, CEO, and Chief Technical Officer of Big Sur Scientific. He is the inventor of the BSS series of patented mid-infrared based cannabis analyzers. Dr. Smith has done pioneering research and published numerous peer-reviewed papers on the application of mid-infrared spectroscopy to cannabis analysis, and sits on the editorial board of Cannabis Science and Technology. He has worked as a laboratory director for a cannabis extractor, as an analytical chemist for Waters Associates and PerkinElmer, and as an analytical instrument salesperson. He has more than 30 years of experience in chemical analysis and has written three books on the subject. Dr. Smith earned his PhD on physical chemistry from Dartmouth College. Direct correspondence to: 

Too often, cannabis laboratories get different results on the same sample. There are a number of causes and solutions. In this installment, the problem is presented along with its causes.

Inter-Lab Variation in the Cannabis Industry, Part I: Problem and Causes

Cannabis distillate samples spiked with known amounts of pesticides were submitted to five cannabis testing laboratories-here are the results.

Inter-Laboratory Variation in Cannabis Analysis: Pesticides and Potency in Distillates

How two different LC–MS/MS methods with ESI and APCI were used for low-level analysis of 72 pesticides