The Hanna Instruments Storage Solution 500ml HI70300 will keep your electrode in excellent condition, preventing the sensor tip and reference junction from drying out.

It is prepared with reagent-grade chemicals that ensure the maximum performance of pH and ORP electrodes.

After cleaning your electrode, rinse with tap water and then soak the electrode in specially formulated Hanna storage solution before taking measurements. The pH 4.01 or pH 7.01 buffer solution can be used if the storage solution runs out.

Electrodes should never be stored in distilled or deionized water, as it will reduce the sensor's lifespan.