This fits your?. Make sure this fitsby entering your model number. Detects residual peroxides in drinking water, pools, and hot tubs where Hydrogen Peroxide is used as a disinfectant. This test strip is calibrated at 0, 1, 3, 10, 50, and 100ppm, and gives results in just seconds. The higher the peroxide level, the more blue the strip becomes Proudly made in the USA!