Insta-Test Pool 4 Plus (Yellow), Free Chlorine, Bromine, pH, and Cyanuric Acid Test Strips

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The Insta-Test Pool 4 Plus strip is an ideal pool strip allowing the user to measure the most important test factors. The test strips are packaged in a waterproof pop top bottle wi th a molded desiccant liner, which protects the strips from moisture and UV light. Free Chlorine 0-10 ppm Total Alkalinity 0-240 ppm pH 6.2-9.0 Cyanuric Acid (Stabilizer) 0-250 ppm Instant results Show more