Hanna Instruments HI70300L pH/ORP Electrode Storage Solution, 500mL (16.9oz) Bottle

Keeps the glass membrane hydrated, prevents microbial growth, and protects the reference junction—crucial for fast and accurate readings. I use it after cleaning or during idle periods; soaking for an hour reactivates sluggish probes reliably. The bottle is sealed with expiration and lot info for traceability

Works great. I use this to store my electrode in between uses because the electrode is to never go dry. If you don't use the electrode for a long time and let it dry out, soak it in this solution for about an hour or more, then calibrate. No biggie. It will mold and grow bacteria in solution after awhile. I've found that rinsing the electrode in between uses helps keep this to a minimum.

Good quality solution keeps the electrode clean in between uses and it lasts a long time for the money excellent

Perfect

Just what i needed

Item received as described and had good shelf life dating

Works exactly like I needed it to

This solution in needed to properly store your auto titration electrodesLab chemicals reagents - just like HP/other brand printers the manufacturer gets you in the wallet when it's time to replace lab supplies (like the printer example - consumable toner/ink/special photo paper).This is the Hanna OEM replacement and work as advertised. The performance is fine, just wish the prices of Hanna replacement reagents/suppliers were ~50% lower.Amazon shipping was prompt.