Product details:

Warnin Not suitable for children under 14 years. For use under adult supervision Aquachek Yellow 4 way test strips Tests for: Free Chlorine, pH, Total Alkalinity, Cyanuric Acid (Stabilizer). 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! Just dip an AquaChek Yellow strip in your pool or spa water for one second and remove it immediately. You get test results in seconds! To keep you pool water clean and healthy, test the water at two ends or sides of the pool a minimum of twice a week! Its also a good idea to write down your results each time you test. Tests for 4 important chemistry in seconds: Free Chlorine, pH, Total Alkalinity, Cyanuric Acid (Stabilizer). User friendly easy-grip bottle with flip-top strip dispenser cap.