| Q:
I keep getting high nitrite readings, what could I be doing
wrong?
A: The test well you are using may be contaminated with
Nitrate Reagent#2. Soak the test well sheet in vinegar overnight,
then rinse thoroughly with tap water, followed by DI water,
and dry completely.
Q: The nitrite in the tank is reading
approximately 10 ppm. Can I still get an accurate reading
of nitrate?
A: If you are getting a pronounced nitrite reading, it is
not possible to get an accurate nitrate reading, since the
nitrite reading will interfere. You should be able to make
a very approximate assessment of nitrate, since the nitrate
color will be additive to the nitrite color.
Q:
The nitrate reading on my kit is reading too low. I checked
the reference and it looks lower than it should be?
A: There was an unfortunate typo on several batches of the
Nitrate instructions in which the reference was listed as
1 mg/L; it is actually 10 mg/L (which actually makes your
problem even more pronounced!). However, if you do the two
following two things your test should read the reference
correctly (a) use 2 full stems of sample instead of 1 and
(b) vigorously shake, squeeze and tap on a table the Nitrate
Reagent#2 so that you obtain a very distinctly grey drop.
Assuming you get a correct reading with the reference, you
can now run your test samples in the same manner and be
assured of the test's accuracy. If have followed the above
instructions yet you still get too low a reading for the
reference, then
contact us to obtain replacement reagents.
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