Restek Is Presenting at NACRW 2020 Webinar

Though NACRW 2020 can’t be live and in-person this year, Restek is pleased to be part of its four-part webinar series.

Our own Joe Konschnik will be presenting the third webinar on “Unlocking the Mystery of Pesticides CRM Stability for Food Analysis,” on 13 October 2020, Tuesday, at 10:00 a.m. and 2:00 p.m., EDT.

Joe will be discussing how to properly handle and store pesticide CRMs to help ensure stability for food analysis. More information on Joe’s webinar is listed below. Additional NACRW webinars feature Steven Lehotay discussing the QuEChERSER mega-method for analyzing pesticides, veterinary drugs, and environmental contaminants; Jens Anderson explaining an alternative practice and procedure for QA/QC and metrology; and Jo Marie Cook presenting a best practice guide for reference materials used in trace-level analysis.

To learn more about the NACRW 2020 webinars, visit the site at



13 October 2020 Thursday, at 10:00 a.m. and 2:00 p.m. EDT

Unlocking the Mystery of Pesticides CRM Stability for Food Analysis

Joe Konschnik (presenter), Jason Fisher, Landon Wiest, Jana Rousova Hepner, Karen Risha

There is a growing global need for pesticide residues testing in a wide variety of food commodities. In response to this need, testing laboratories must develop versatile analytical methods and workflows in order to produce scientifically sound results which ensure the safety of our food. One of the many challenges faced by food chemists is acquiring suitable pesticide certified reference materials (CRMs) to calibrate analytical equipment, monitor method performance and confirm the identity and concentration of hundreds of pesticide residues in food samples. Questions regarding the stability of pesticide CRMs abound among users and there’s a need to educate and inform the community. CRM producers invest considerable resources to ensure the stability of their products. The authors will present proper CRM handling and storage practices as guidance to ensure stability based on the results of several multiresidue pesticide stability studies. The results of three pesticide mix stability studies will be shown demonstrating what can be expected after pesticide mix ampuls are opened and stored for use, and also when mixed together for routine LC-MS/MS and GC-MS/MS laboratory analysis.