These Pool Test Strips/Hot Tub Test Strips are ideal the solution for basic testing of the water in your pool or spa. The 3 in 1 test strips come with an easy colour match system, allowing you to test the Alkaline, pH and Free Chlorine levels.Measures Free Chlorine 0 to 10ppm, Alkalinity 0 to 240ppm and pH 6.2 to 8.4 with instant results.Each packet contains 50 test strips18-month shelf life
