I'm investing more and more in Hanna. Thinking about customizing the way I do testing.
Use one vial of just tank water to zero-out the unit and the second vial being the one with the reagent + tank water.
When running a test use 1st vial to zero-out and then 2nd vial to get reading.
BUT... rerun the test with the 1st vial to zero-out but turn the both vials to a different part of the vial glass to make sure a dirty or scratched or stained vial isn't producing an inaccurate reading.
Both test runs should be almost identical in #s within reason of the reagent "time-aging" in the 2nd vial
If I get whacky readings, consider buying brand new vials. (And yes I've researched that aging vials can be way off due to scratching and staining), I believe the standard is to buy new vials in between 6mos to a year. Past a year, the vials are too stained to be accurate
Thoughts?
.
Use one vial of just tank water to zero-out the unit and the second vial being the one with the reagent + tank water.
When running a test use 1st vial to zero-out and then 2nd vial to get reading.
BUT... rerun the test with the 1st vial to zero-out but turn the both vials to a different part of the vial glass to make sure a dirty or scratched or stained vial isn't producing an inaccurate reading.
Both test runs should be almost identical in #s within reason of the reagent "time-aging" in the 2nd vial
If I get whacky readings, consider buying brand new vials. (And yes I've researched that aging vials can be way off due to scratching and staining), I believe the standard is to buy new vials in between 6mos to a year. Past a year, the vials are too stained to be accurate
Thoughts?
.
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