North Yelm, WA, United States
North Yelm, WA, United States

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News Article | May 12, 2017
Site: www.prweb.com

A2LA is proud to announce the accreditation of the first Cannabis testing laboratory to ISO/IEC 17025 in the state of Washington. The Washington State Department of Agriculture-Chemical and Hop Laboratory located in Yakima, WA finalized the accreditation process on May 3, 2017. The laboratory has been assessed to ISO/IEC 17025 – General Requirements for the Competence of Testing and Calibration Laboratories and is currently able to test multiresidue pesticides in Cannabis and other matrices. “WSDA sought this accreditation to ensure our clients can have absolute confidence in our testing methods and lab results. The information we produce drives enforcement cases and policy decisions. We want to do everything that can be done to make sure our data is reliable,” stated Mike Firman, manager, WSDA Chemical and Hop Laboratory. The A2LA Cannabis Accreditation Program establishes a standard of quality for the testing of cannabis and cannabis-derived products, including hemp, oils, and hash concentrates. Currently, a significant number of states, where cannabis has been legalized for recreational and/or medical use, specify or encourage laboratory accreditation to the requirements of ISO/IEC 17025. Because each state’s specific requirements for cannabis testing tend to vary, A2LA is focused on working with state regulators to establish consistent regulatory requirements, and to offer accreditation to any specific state requirements, if necessary. These efforts help to ensure that A2LA accreditation offers the highest level of recognition and provides the most value to the laboratory and to users of these products. “A2LA is excited to play such an important role in the accreditation of Cannabis testing laboratories and is pleased to see ISO/IEC 17025 accreditation expanding into additional states,” stated A2LA General Manager, Adam Gouker. “Priority must be placed on ensuring that Cannabis products are tested by competent laboratories to convey confidence in the results – a cornerstone which underpins the safety to all end-users.” A2LA is currently accepting new applications for accreditation from testing laboratories under the A2LA Cannabis Testing Program. In addition, laboratories that currently hold ISO/IEC 17025 accreditation with A2LA and that are in states where medical or recreational cannabis has been legalized, may expand their existing Scope of Accreditation to include tests in this area. More information regarding the A2LA Cannabis Accreditation Program may be found at http://www.A2LA.org/Cannabis. About A2LA A2LA is a non-profit, non-governmental, third-party accreditation body, offering internationally-recognized accreditation services and training to testing and calibration laboratories, inspection bodies, proficiency testing providers, reference material producers and product certifiers.


Holmes B.,Chemical and Hop Laboratory | Dunkin A.,Chemical and Hop Laboratory | Schoen R.,Chemical and Hop Laboratory | Wiseman C.,Chemical and Hop Laboratory
Journal of Agricultural and Food Chemistry | Year: 2015

In this study, we successfully applied a previously modified version of the QuEChERS approach to quantify pesticide residues in samples of fresh salmon. Analysis was performed using a combination of liquid and gas chromatography-tandem mass spectrometry (LC-MS/MS and GC-MS/MS). The validated QuEChERS method used ethyl acetate for the extraction solvent and involved two freezing steps and a C18 dispersive solid phase extraction for removal of lipids. Of the 228 pesticides initially screened, only 185 passed the method validation criteria (103 on LC-MS/MS and 82 on GC-MS/MS). In a quantitative validation, acceptable performances were achieved with overall recoveries of 70-120% and <20% RSD for 179 analytes (n = 7) over the course of five different extractions at 2 times the limit of quantification. Over 12 months, this method was used in the analysis of 708 salmon samples collected as part of the U.S. Department of Agriculture's Pesticide Data Program. Ruggedness testing conducted throughout the entire study showed this method to be robust and suitable for long-term use. © 2015 American Chemical Society.


In this study, we successfully applied a previously modified version of the QuEChERS approach to quantify pesticide residues in samples of fresh salmon. Analysis was performed using a combination of liquid and gas chromatography-tandem mass spectrometry (LC-MS/MS and GC-MS/MS). The validated QuEChERS method used ethyl acetate for the extraction solvent and involved two freezing steps and a C18 dispersive solid phase extraction for removal of lipids. Of the 228 pesticides initially screened, only 185 passed the method validation criteria (103 on LC-MS/MS and 82 on GC-MS/MS). In a quantitative validation, acceptable performances were achieved with overall recoveries of 70-120% and <20% RSD for 179 analytes (n = 7) over the course of five different extractions at 2 times the limit of quantification. Over 12 months, this method was used in the analysis of 708 salmon samples collected as part of the U.S. Department of Agricultures Pesticide Data Program. Ruggedness testing conducted throughout the entire study showed this method to be robust and suitable for long-term use.

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