HI80300L is a storage solution that is supplied in an FDA compliant bottle. It is prepared with reagent grade chemicals that can be used to ensure optimum performance of your pH and ORP electrodes. It is necessary to store a pH electrode in a solution in order to keep the glass membrane of the pH electrode hydrated. Ideally a storage solution should be used; never store an electrode in distilled or deionized water. 

• Manufactured specifically for pH and ORP electrodes
• Clearly marked expiration date and lot number