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 with 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