Just a quick question and hopefully a quick answer.
I have just purchased a Ph Pen (cheapy from Amazon), I have bought some de-ionised water to calibrate with, then I read on the solution packs that ph changes with temperature, for me to calibrate correctly do I need to make sure the solution is at 25c?
I have just purchased a Ph Pen (cheapy from Amazon), I have bought some de-ionised water to calibrate with, then I read on the solution packs that ph changes with temperature, for me to calibrate correctly do I need to make sure the solution is at 25c?