When pool water is unbalanced, it can irritate the skin and eyes and cause sanitizers can be less effective. Imbalanced water can even damage the pool’s surfaces, structure or equipment if left untreated. Quickly and easily test your indoor and outdoor swimming pool water with the 6-Way Test Kit. This pool water test kit tests for total chlorine, bromine, pH, total alkalinity, total hardness and cyanuric acid (CYA). Best of all, this test kit for swimming pools works with chlorine, bromine, and saltwater pools. Store the kit in a cool, dark place and replace it yearly. To use : collect water sample 18 inches below water surface (approximately deep enough so the water reaches your elbow). Hold the bottle vertically when dispensing drops.