Calibrating handheld pH meter

[@walker8476]

If you calibrated the pH meter to seven and four, does that mean you can only use it for acidic or neutral solutions?

[@jorgeomar3663]

Great video but shouldn´t store the electrode in pH 7 solution. If you don´´t have KCl 3M than your second best option is pH 4 solution.

[@bobmcbob7870]

does the glorious leader use kim wipes?
well he invented them so i guess he did