A titration or drop count test for both FC and CC, to find your TC add your FC and CC readings. Measures chlorine levels up to at least 25 ppm with an accuracy of .2 ppm. This is the test you want! It does not suffer from the bleach out problem that the DPD test has and is very easy to read since the color change is from red to colorless.
FAS-DPD
Updated onUpdated on Oct 24, 2020 at 10:28 AM
