Correct storage of your pH probes can substantially increase the life of the probe saving you time, effort, and money. Here are a few points on how to get the most out of your probes. Firstly, make sure you always keep your pH electrode moist. The best solution to submerge the probe for long and short term storage is 4M Potassium Chloride Solution (KCl).
Most electrodes are shipped with a protective cap over the glass bulb to help prevent damage in transit.
Remove the cap prior to using your electrode. Keep your electrode in long term storage with the cap on, just fill the cap with enough 4M Potassium Chloride Solution to cover the glass bulb and replenish often to keep the bulb moist.
Also, soak a small piece of sponge in storage solution and insert into the cap. Furthermore, this will provide extra protection for the bulb and retain the moisture for an extended period of time.
After storage, you may notice white Potassium Chloride crystals forming outside your electrode. This is normal and will not interfere with measurements. If this has occurred, gently wash the electrode with tap water and blot dry before use being careful not to put pressure on the electrode.
