DO NOT TOUCH PH Probe ends with your fingers
Take the pH probe out of the beaker/holder/sump
Rinse the pH probe with deionized water
Absorb the excess water with a dry cloth. There is no need to dry it completely (touch the pH probe with cloth and it will absorb the water)
Rinse the pH probe with the Reef Factory PH Probe Cleaning Solution
Rinse it with deionized water once more