I have two bottles of reagent, bought at the same time. One tests at 7.0 and the other at 8.3. Multiple tests, same results. Anyone else experience this much difference in bottles?
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I have two bottles of reagent, bought at the same time. One tests at 7.0 and the other at 8.3. Multiple tests, same results. Anyone else experience this much difference in bottles?
That certainly implies a bad reagent bottle to me. I have not encountered that problem since they changed the seal at the top of the bottle. The old foil seal caused the reagent to go bad if stored horizontally. Since they changed that I haven't had issues.
I would have a friend check your alkalinity to try and determine which bottle to throw away. Have you contacted Hanna about this? Has either bottle been opened for a long time?