The AquaChek Free Chlorine Test Strips (50 ct) provide a quick and easy way to test key pool water levels. Each strip measures Free Chlorine, Cyanuric Acid, pH, and Total Alkalinity, ensuring your pool water stays balanced and safe. With 50 strips per bottle, these reliable test strips help you maintain optimal water chemistry for a cleaner, healthier swimming experience. Perfect for routine testing and easy to use for both novice and experienced pool owners.