UGMA moisture meter calibration constants have been updated


Effective June 1, 2013 USDA/GIPSA has updated the UGMA calibration constants for all UGMA Moisture Meters. If you have a Perten AM 5200-A Grain Moisture Tester, you can download those constants here. The DICKEY-john GAC 2500 calibration constants can be downloaded here.



Grain Moisture, The Most Important Test You'll Ever Take!


For nearly 20 years we have sold and supported grain instrumentation. We understand the economic importance of grain moisture measurement and stand ready to answer your questions and provide the right equipment for your operation. Whether you are a grain elevator, grain processor or farmer; give us a call for honest answers and the best equipment.



GSF / Ag STAR specializes in grain testing and sampling. Our professional team is the most knowledgeable in the industry with years of national experience. If you have questions or problems feel free to give us a call.

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. Learn more about this amazing new instrument in the Sales section of our website.

GSF / Ag STAR is also introducing a Moisture Meter Evaluation (MME) program that provides an economincal third party evaluation of your moisture meter to new UGMA standards. More information is available in the MME section of our website.