- Feb 7, 2020
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You just have to know it's off by X %. Are you sure you did the salt test right?Any advice?!! I am trying to calibrate the hygrometer I bought (acurite 0047). But there is no calibration adjustment on it. How do I know if it is right or if my incubator (NR 360)'s humidity gage is right? I put it the acurite hygrometer in a Tupperware with a teaspoon of salt and a few drops of water over night. It measured it to be 68%. What do I do?