How can I prepare my own electrode filling and storage solution?

[Beer666]

I would like to mix up my own KCL solution as it is expensive and would like to save money. Is it just potassium chloride and water?

 

[Tom R]

Found this on pasco.com:
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.

 

[Beer666]

Sorry i thought i had replied. In that case i will order some from ebay and mix up my own. Thanks Tom for your help.