-
Different brands of reagents are NOT
interchangeable. Don’t mix brands!
-
Dropper bottles should be held vertically to produce
uniform-size drops.
-
Natural daylight is best for comparing colorimetric
test results.
-
It is
not necessary to wait for spa water to cool to room
temperature before performing water tests.
-
Reagent age can affect test results. Check the
expiration date on reagents, or replace them after a
year if you can’t find an expiration date.
-
Reagents should be stored tightly sealed at
temperatures between 40° and 80°F and away from
direct sunlight.
-
Mixing
a reagent into a water sample with your finger
capping the vial can skew the test results. Always
use the cap provided with the vial.
