50Pcs Chlorine Dip Test Strips Hot Tub Swimming Pool Fishpond PH Tester Paper
Effective chlorine, pH, and total hardness can be tested. Water test in swimming pool or spa pool. Residual Chlorine Range: 0 - 10. Material: PH Test Strip. Detectable PH Range: 6.8 - 8.4. Total Hardness Range: 0 - 240.