Insta-Test® Biguanide 6-Way Test Strips – Quick Water Testing for Chlorine-Free Pools (25 Count)

Each bottle includes 25 test strips packaged in a waterproof pop top bottle with a molded desiccant liner, which protects the strips from moisture and UV light. Biguanide 0-80 ppm Biguanide 0-360 ppm Peroxide 0-100 ppm Alkalinity 0-240 ppm pH 6.2-9.0 Total Hardness 0-800 ppm