How do I make more pH electrode storage solution?

I need more storage solution for my PASCO pH electrodes.

Mix your own pH storage solution

Mix a solution consisting of equal parts 4M Potassium Chloride (KCl) and pH 4 buffer solution. KCl is a common salt which may be obtained from most chemical suppliers. You may store the pH electrode indefinitely in this solution, but for long term storage, we recommend storing the electrode dry. Please see KB 21: pH electrode maintenance for more details.

Purchase Storage Solution from PASCO

You can also purchase pH storage solution as pH storage solution SC-3507.

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