Oh and the pH sample was not room temp but the device claims to auto temp correct. It is recently calibrated but I wouldn't swear by it's accuracy.PH samples are evaluated at room temperature. Autocorrection compensates for the meters error, not changes in the sample with temperature. The probe will last much longer if you measure at cool temps.
Ah! I definitely misunderstood the ATC function then.. that would put it closer to 5.2 then
Actually maybe it was right, just saw this sentence on the calculator:
"This calculator attempts to correct the reading of a pH meter that does not internally account for temperature. If your pH meter features automatic temperature compensation (ATC) or the ability to "dial-in" temperature, it is already internally performing this correction."
Then again 152 may be too high for it to work effectively.
Two things go on with temperature, the meters accuracy. The sample will change. Do you think the meter is made just for wort, or is it made for any sample that will change with temperature at different reaction rates WRT temperature?
I measure at room temperature, even though my meter has temperature compensation.