Product Description
H-B Instrument Alcohol Proof Ethyl Alcohol Hydrometer 20-40%: Industrial & Scientific. The tolerances listed for these hydrometers are those outlined in Circular 555 of the National Bureau of Standards, Testing of Hydrometers. For determining proof of ethyl alcohol spirits, all hydrometers are made according to the Bureau of Internal Revenue, US Treasure Department. Each hydrometer is calibrated in a triple accredited ISO/IEC 17025:2005, A2LA accredited laboratory against equipment whose calibration is traceable to NIST.
Shipping Weight: 10.4 ounces
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