Alcohol Hydrometer 10 to 20 % / 20 to 40 Proof IRS G
Vee Gee Scientific
IRS G % Alcohol / Proof hydrometer this hydrometer is calibrated to show the percent of alcohol by volume @ 60 °F.
IRS Alcohol Hydrometers comply with IRS specifications
Each hydrometer is accompanied by a certificate of calibration stating that the instrument meets or exceeds the tolerances of accuracy and physical specifications set forth by the National Institute of Standards and Technology, American Society for Testing and Materials, American Petroleum Institute, and Military STD-45662A