50 Strips/Bottle Tests for 4 important chemistries in seconds: Total Bromine, pH, Total Alkalinity and Total Hardness. Our Bromine strips include a test for Total Hardness since warmer water temperatures increase the potential for scale build-up making it particularly important for spa owners to maintain proper hardness levels. Get 4 important test results in just one dip! Just dip an AquaChek Red strip in your pool or spa water for one second and remove it immediately. 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. User friendly easy-grip bottle with flip-top strip dispenser cap. Includes delivery.