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

This is a Set of Test Strips 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. Test for 4 important chemistries in seconds: Free Chlorine, pH, Total Alkalinity, and Cyanuric Acid (Stabilizer). Can be used in pools with salt generators!