Tests for Free Chlorine, Cyanuric Acid, pH and Total Alkalinity - 50 strips per bottle
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 your pool water clean and healthy, test the water at two ends or side of the pool a minimum of twice a week! If used in your spa test before and after each use. It's also a good idea to write down your results each time you test, so you can track changes.