Features

• The Insta-Test POOL 4 Plus pool &spa strip measures Free Chlorine 0-10 PPM, Total Alkalinity 0-240 PPM, pH 6.2-9.0, and 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 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.