Bad things can happen to good thermometers... so we're looking for a new calibration thermometer. I've noticed that there are at least two certifications--NIST and ASTM for these. I Googled this and couldn't get anywhere. What's the difference?
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NIST vs ASTM Theremometers
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NIST is the standard by which your calibrated equipment is traceable to the original calibration. This is only important if your a regulated organization by some contract or industry standard and need to prove proper calibration in an audit. ASTM is the standard for the calibration tolerances.
For a brewery, it doesn't really matter which one you go with, it's calibrated either way.
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Muchas thanks, Mindseye.
All I could find out from the 'net was that NIST seems to be a part of ASTM, and , if I really want to know what the ASTM E1 standar for thermometers is, they;ll be glad to tell me for $80.
The main difference I noticed between NIST and ASTM certified thermometers was a factor of >10 in price... $40 for an ASTM, $400+ for NIST.
This is what I ordered: ASTM Liquid-in-Glass Thermometers (Mercury) (ACC015F ) 15F , Low Softening Point , +30 to +180°F , 0.5°F , TOTAL , 400mm, from Lab Depot. Looks like it's about perfect for our uses.Timm Turrentine
Brewerywright,
Terminal Gravity Brewing,
Enterprise. Oregon.
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