Calibrating Thermometers: Techniques by Chris Colby
How hot was it? Without calibrating your thermometer, you have no idea. Learn how to use the physical propertes of water to get your thermometers properly adjusted.
Homebrewers make a variety of measurements every brewday. We weigh out our malt and hops and perhaps malt extract. We take the mash or steeping temperature. We either boil down to or top up to our target batch volume and then we take the original gravity. If you haven’t calibrated your measuring devices, however, all these measurements could be off, perhaps by a fairly large margin. In this installment of Techniques, I’ll show you how to calibrate your “master” brewing thermometer and your working thermometers.
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