HI70300L is a storage solution prepared with reagent-grade chemicals that helps ensure optimum performance of your pH and ORP electrodes. pH electrodes must be stored in a solution to keep the glass membrane hydrated. Ideally, a dedicated storage solution should be used; never store an electrode in distilled or deionized water. Hanna Instruments storage solution is specifically formulated to minimize microbial growth and reduce diffusion and osmotic effects that can occur when storing a probe in a solution with a highly concentrated internal reference electrolyte. Storing your pH and/or ORP electrodes in a storage solution also helps keep the junction clear. Maintaining a hydrated glass membrane and a clear junction helps ensure fast and reliable measurements. After cleaning your pH electrode with one of our cleaning solutions, we recommend soaking the electrode in HI70300L storage solution for at least one hour before taking measurements.

• Specially formulated to minimize microbial growth and osmotic/diffusion effects between the solution and the internal reference electrolyte
• Manufactured specifically for pH and ORP electrodes
• Clearly marked expiration date and lot number