Testing Analysis Methods
The U.S. Department of Agriculture (USDA) Federal Grain Inspection Service (FGIS) or FGIS-designated official service providers provided official grading and aflatoxin results from their normal inspection and testing procedures for each sublot corn sample collected. The 2017/2018 Corn Export Cargo Quality Report samples (approximately 6 pounds or 2,700 grams) were sent directly from the FGIS field offices and official service providers to the Illinois Crop Improvement Association’s Identity Preserved Grain Laboratory (IPG Lab) in Champaign, Illinois, for chemical composition, physical factors and deoxynivalenol (DON) or vomitoxin testing. Next, the samples were split into two subsamples using a Boerner divider, while keeping the attributes of the grain sample evenly distributed between the two subsamples. One subsample was analyzed for DON. The other subsample was analyzed for chemical composition and other physical factors following either industry norms or well-established procedures. IPG Lab has received accreditation under the ISO/IEC 17025:2005 International Standard for many of the tests. The full scope of accreditation is available at http://www.ilcrop.com/labservices.