These Ultra High Free Chlorine water quality test strips have a very high range of detection with a patented Free Chlorine indicator that does not bleach out even at levels above 2000 ppm. Ultra High Free Chlorine is perfect for determining whether or not you have the correct amount of sanitizer present. All of the reagents are impregnated on the test strip pad and no external chemicals are needed to perform the water quality test.
Free Chlorine Check - Ultra High
0 - 750 ppm