I made a large water change today, and thought'd it be "fun" to compare results between the new Hanna Nitrate High Range 782, and the old Low Range 781 using the dilution step.
First of all, both checkers are pretty precise. The test procedure is repeatable on both, giving very similar percentage differences between the values.
Not sure which checker one is more accurate tho? (more accurate = number on the checker is closer to the amount of NO3 in the water sample)
I mean plus/minus 28% is a big difference!
Wish I could run an ICP test for a more accurate NO3 reading now!
781 Low Range diluted | 782 High Range | Percentual Difference | |
Before Water Change | 24,9 | 33 | 27,9% |
After Water Change | 11.6 | 15,4 | 28,1% |
First of all, both checkers are pretty precise. The test procedure is repeatable on both, giving very similar percentage differences between the values.
Not sure which checker one is more accurate tho? (more accurate = number on the checker is closer to the amount of NO3 in the water sample)
I mean plus/minus 28% is a big difference!
Wish I could run an ICP test for a more accurate NO3 reading now!