I am trying to determine what standards i should purchase for pesticide analysis in the FSIS program. I am currently working on getting our lab accredited for CHC Pesticides. There are 28 CHC/COP analytes listed on the FSIS site that pertains to the program, but years ago, I had worked in an accredidted lab, where the monthly check samples sent by the FSIS where limited to about 12 analytes. Any help on this would be appreciated.