pH Pen Calibration - Tutorial

[montuckyboze]

will just one calibration solution work? or should you really double check always?

[NeverGrowBack]

@montuckyboze You can check it by using the solution with the closest value to the pH of your solution - often then pH 7 buffer solution for indoor gardening. pH 7 is "base 0" and the gain or slope is set by pH 4/10 buffers.. so if pH 7 is off then it's wise to use the two-point calibration. If the pH is 7.1 or 6.9 I probably wouldn't bother calibrating it - the solution is not that sensitive usually.

[UnrealJello]

How are you supposed to store them?

[NeverGrowBack]

@UnrealJello Depends on the pen - I have been told tap water, pH #7 buffer solution, specific storage solution, and one company said the solution in the glass was a pH of 3 so the pH #4 buffer solution would cause less drift. I just put the cap back on mine under the assumption no storage solution is better than the wrong storage solution.

[Devon187]

Thanks... even got the same pen infront of me for testing lmfao... hope only using PH 7 is ok for calibration

[NeverGrowBack]

@Devon187 Nah you'll want to use the ph 4 buffer solution as well.

[ClankyRochet]

Nice one man this really helping me out. Thank

[NeverGrowBack]

@ClankyRochet Good to hear, thanks for the comment!