50pcs 3/6IN1 Chlorine Dip Test Strips Hot Tub SPA Swimming Pool PH Tester Paper
Designed for testing Free Chlorine, Total Chlorine, pH, Total Alkalinity, Total Hardness and Cyanuric acid. Total Alkalinity Test Range:0~240ppm. Can test effective chlorine, pH, total hardness. Water testing for swimming pools or spa pools.