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  1. 2020-02-20
  2. AH
  4. Residual Pesticide Screening in Cannabis Matrices Tips and Tricks
  5.      Pesticides as a class of contaminants in cannabis flower come with many challenges in analysis for compliance and consumer safety.  These concerns have great impact on your business whether considering long-term economic success,patient health, or the valuable mental market share in patients who can trust the quality of your products. The diverse types of pesticides used by producers to protect against herbivory or mycological contamination come with every range of chemistries. For example the thorough California panel includes 67 pesticides, five mycotoxins, and a synergistic insecticide known as MGK-264. This extensive panel contains extremely variable limits for compliance designed to protect the health of consumers and especially immuno-compromised patients.   To meet this challenge we must emphasize the importance of sample prep. This crucial step pre-analysis already creates the outcome. An improper preparation without full extraction of pesticides masks the true content of your sample tested and is make or break for passing compliance. Confidence and surety comes with doing it right the first time and preventing a costly recall or loss of consumer trust.  Proper sample prep includes extensive homogenization of material and exhaustive extraction to carry through all pesticides for testing.  Cannabis flower as a matrix is incredibly complex and without clean-up of high content co-extractives like cannabinoids, terpenes, or waxes contributes to extra maintenance and down time for analytical instruments. As a lab doing daily high quantities of samples this translates to lost efficiency and profit that can't be taken back. Sample clean-up designed to remove these co-extractives aids in efficiency and analysis of an extensive California panel by reducing the complexity of the sample overall.    With this properly prepared sample readied there is no better analysis for wide compliance levels of these pesticides than with gas & liquid chromatography coupled with tandem mass spectrometry. These instruments have enormous versatility and sensitivity to confidently quantify very trace and more prevalent pesticides in the same sample. To execute analysis with these instruments requires extensive analytical statistical validation of the method. This requires purchasing of reference standards, preparation of minimum five point calibration curves for each pesticide, recovery tests, and many initial technical replicate measurements to insure intra-day and inter-day reproducible analysis moving forward.      Whether you are a grower looking for appraisal of your crop for continued compliance or  processor looking to verify quality of extraction material [Our business] can help you achieve accurate testing and long-term economic success for your business.
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