•Ideal for drinking water compliance monitoring and testing in a food processing environment. •US EPA Approved. •Reagents are impregnated on the test strips. No chemicals need to be added. •Designed to resist interference from monochloramines. •Detection levels of free chlorine: 0, 0.05, 0.1, 0.2, 0.4, 0.6, 0.8, 1.2, 1.5, 2.0, 2.6, 4.0 and >6 ppm (mg/l).