Test Strips, AquaChek Yellow, 4-in-1, Free Chlorine, 50 ct : 511242A

Test Strips, AquaChek Yellow, 4-in-1, Free Chlorine, 50 ct Ideal for customers who use chlorine as a sanitizer in their pool or spa. Includes a test for Cyanuric Acid (stabilizer), which is especially important for outdoor pools and spas.Tests for: Stabilizer (Cyanuric Acid): 0-300 ppm Free Chlorine: 0-10 ppm Total Alkalinity: 0-240 ppm pH: 6.2-8.4 This item cannot be exported. Test Type: Alkalinity, Chlorine, Cyanuric Acid, pH Test Style: Strip Manufacturer: AquaChek/HachReplaces 220789,90944012429,