Originally Posted by monkeyman1000
So I just rechecked it against my Thermapen. It read 65.9 and the Thermapen read 65 so not sure what happened yesterday. I wasn't even drinking.
Well, there you go! I guess if there's a lesson to be learned its never, EVER fool around with a pH meter when you're not drinking.
Kidding aside, thanks for the discussion on this. I sort of assumed the premixed buffer would expire at some point, but I expected it to last a bit longer than 4 months. Pillows (or singlets) for me.
Do you guys just put the sample to be measured in the pH meter cap?