Insta-Test 4 Way Pool & Spa Test Strips (Pack of 50 Strips)
The Insta-TEST Pool 4 Plus strip measures Free Chlorine 0-10 ppm, Total Alkalinity 0-240 ppm, pH 6.2-9.0 Cyanuric Acid (Stabilizer) 0-250 ppm.
This test strip is a dip-n-read strip with instant results. The Insta-TEST Pool 4 Plus strip is the ideal pool strip allowing the user to measure the most important test factors. The test strips are packaged in a waterproof yellow PopTop bottle with a molded desiccant liner, which protects the strips from moisture and UV light.