The Industrial Test Systems WaterWorks 480024 free-chlorine test strips have a 0 to 750ppm (mg/L) test range and a 31 second test time, and are used to test chlorine levels in a variety of settings, including food and beverage processing. All reagents are impregnated on the strips, eliminating the need for other chemicals. The strips have 0, 25, 50, 100, 200, 300, 400, 500, 750ppm (mg/L) detection levels, and resist interference from monochloramines. Includes one bottle of 50 test strips.

Industrial Test Systems manufactures water quality testing equipment for water treatment, food and beverage, pool and spa, educational, and medical industries. The company, founded in 1989, is headquartered in Rock Hill, SC.