As of May 1, 2013 the GAC 2100 is no longer the GIPSA standard for any "official" testing.
Download files for DICKEY-john GAC 2500-UGMA Calibration Update Aug 2018
Instructions for updating the GAC 2500-UGMA.
Below are the latest calibration constants for the DICKEY-john ® GAC 2100, GAC 2000, and GAC 500 Grain Moisture Meters as well as instructions on how to update these. Effective date 01 JULY 2018
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