GSF / Ag STAR specializes in grain testing and sampling. Our professional team is the most knowledgeable in the industry with years of national experience. The technology used in grain moisture testing is changing rapidly as the U.S. grain industry shifts to the new UGMA technology developed and endorsed by USDA/GIPSA. The UGMA concept provides increased moisture testing accuracy that benefits the grain elevator and the farmer.GSF / Ag STAR is a national distributor for PERTEN Instruments and sells and supports their AM 5200-A UGMA Moisture Meter.