Put these two factors alongside a calibrated and accurate thermometer in ice water at 32 degrees. My accurate thermometer read 32, these two read 20 and 31 degrees above! NOT EXACTLY exactly. My house temp is set at 68, one said 88 and the other said 99. Not even close. For example, if it was within a degree or two, I understand. But thirty-one degrees? no Unacceptable. I can't use them in my incubators. Will return.
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