Features:1. 6 in 1 Pool and Spa water quality test strips.Tests for Free Chlorine, Free Bromine, pH, Total Alkalinity, Total Hardness and Cyanuric Acid.2. Easy to use.Test at both ends of pool twice a week for best results.3. This strip is easy to use, help you easily know your water quality in main 6 indicator.4. Quantity:50 Pcs/Bottle, meet long term needs.5. Test Range:Total hardness: 0 -1000, Total chlorine range: 0-10, Cyanuric Acid:0-240, Free bromine range: 0-22, PH range: 6.8-8.4, Total alkalinity: 0-240.Notice:Actual color may be slightly different from the image due to different monitor and light effect. Please allow minor deviation due to manual measurement.Specification:Type:Swimming Pool SPA Test StripsQuantity:50 Pcs/BottleTest Range:Total hardness: 0 -1000Total chlorine range: 0-10Free bromine range: 0-22PH range: 6.8-8.4Total alkalinity: 0-240Cyanuric Acid:0-240Package Includes:1 bottle(50pcs) x swimming pool test strip