Description:Features:1. 5-in-1 Pool & Spa Water Quality Test Strips. Tests for free chlorine, free bromine, pH, total alkalinity, total hardness, and total chlorine.2. Easy to use. Test at both ends of the pool twice a week for best results.3. This bar is easy to use, helps you easily know the water quality in the main 6 indicator.4. Quantity: 50pcs/bottle, meet long-term needs.5. Test Range: Total Hardness: 0 -100, Total Chlorine Range: 0-10, Free Chlorine Range: 0-10, Free Bromine Range: 0-22, PH Range: 6.8-8.4, Total Alkalinity: 0-240.Note:1. The actual color may be slightly different from the picture due to different monitor and lighting effect. Please allow slight deviation due to manual measurement. Specification:Type: Swimming Pool SPA Test StripsQuantity: 50pcs/bottle Test Range:Total Hardness: 0 -100Total Chlorine Range: 0-10Free Chlorine Range: 0-10Free Bromine Range: 0-22PH Range: 6.8-8.4Total Alkalinity: 0-240Package Included:1 Bottle (50pcs) x Pool Indicator Paper