My buddy works in a food testing facility and I'm looking for pH
electrode storing solution. In one of the cabinets in the lab he found a
bottle marked, "Electrode filling solution 4 Molar Potassium Chloride
Saturated with Silver Chloride".

Can I use this as an electrode storing solution? I know I need
potassium chloride but I don't know what the rest of the stuff is, like
silver chloride.

Thanks!

-Paul