Just finished a bottle of alkalinity reagent on my Hanna tester - alk reads 11.8. Open the new bottle and re-test to check consistency. 10.7 ... Run a third test (from new bottle), confirms 10.7!
The previous bottle is still well in date, has been open for approx. 4 months. Confident my testing procedure is consistent, carefully cleaning vials before and after (and between) tests. Clean vials with a glass cleaning cloth before putting in the Hanna reader.
Is there know inconsistency between Hanna reagent bottles? Is there a limit to how long they can remain open? I know consistency of the level is the important thing but for understanding whats happening with tank chemistry, this is quite a big difference!
The previous bottle is still well in date, has been open for approx. 4 months. Confident my testing procedure is consistent, carefully cleaning vials before and after (and between) tests. Clean vials with a glass cleaning cloth before putting in the Hanna reader.
Is there know inconsistency between Hanna reagent bottles? Is there a limit to how long they can remain open? I know consistency of the level is the important thing but for understanding whats happening with tank chemistry, this is quite a big difference!