To prevent the glass pH membrane and junction from drying out it is recommended to store your electrode in an electrode storage solution. The best solution for this is 50% saturated KCl and 50% pH 4 buffer in conjunction with a soaker storage bottle. pH buffer is used because the glass prefers a slightly acidic environment, adding the KCl avoids pH memory effect. Adding 4% sodium benzoate will prohibit mould growth.
Electrode storage bottles can be found here
Electrode storage solution can be found here
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