AquaChek | 511242A | Yellow Test Strips 4 in 1 for Chlorine pH Alkalinity Cyanuric Acid 50 pack

Aqua Chek Aqua Chek Yellow Test Strips Free Chlorine, 50 Strips Tests for 4 important chemistries in seconds: Free Chlorine pH Total Alkalinity Cyanuric Acid (Stabilizer) Ideal for customers who use chlorine as the sanitizer in their pool or spa. Includes a test for Cyanuric Acid (Stabilizer), which is especially important for outdoor pools and spas which are subject to chlorine dissipation from UV rays. Get 4 important test results in just one dip! You get test results in seconds! To keep you spa water clean and healthy, test the water before and after each use! If used in a pool we recommend testing at two ends or sides of the pool a minimum of twice a week. It’s also a good idea to write down your results each time you test.