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.
Bottle of 50 tests
Detects: 0, 25, 50, 100, 200, 300, 400, 500, 750 ppm (mg/L)