Method: colorimetric with test strips - 2 - 5 - 10 - 25 mg/l H₂O₂ MQuant™ More>> Method: colorimetric with test strips - 2 - 5 - 10 - 25 mg/l H₂O₂ MQuant™ Less. ColorKiM Hydrogen Peroxide Test Strips, Ideal for Measuring Peroxide Level of Pool and Hot Tub Water, PPM Range ( Test Strips). The Peroxide test strip is calibrated at 0, , , and ppm, and gives results in just seconds. This test strip can be used to test pools and hot tubs where peroxides, rather than chlorine, are used to sanitize. Recommended peroxide levels vary, therefore, the test strip can be used to test the concentrations users prefer.