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Calibrating pH meter for homebrewing beer

In this post, Mike walks through how to calibrate a pH meter for homebrewing. Specifically, he demonstrates the process using the Milwaukee MW102 pH meter, the same meter he used during his mash pH ...
Procter & Gamble has filed a patent for a pH sensing probe that includes a sensor body, a pH glass electrode, a reference electrode, and a backup pH electrode. The backup electrode can be ...