For proper maintenance of pH probes, between uses, the use of this storage solution which has been specially formulated for this purpose, is recommended.
It extends the life of your meter's pH probe, keeping it clean and in proper condition for precise and effective use and measurement.
A few drops onto the plastic of the probe are enough to keep the probe in a proper condition.
A 230 ml bottle ensures supply for some time. Recommended for the concientious.