ITEM NAME:100Strips 14in1 Swimming Pool Spa Water Test Strips Nitrate Nitrite PH Hardne 3C Feature: The test paper has high precision, simple operation, convenient carrying. Quickly test the Nitrate Nitrite PH Carbonate Hardness General Hardness in water by colorimetric method. Commonly used in swimming pools, spas and other industries. Descriptionï ¼Å¡ Quantity: 100pcs/Box Name: 14-in-1 Swimming Pool Test Strips Residual Chlorine PH Total Alkalinity Hardness Iron Copper Lead Nitrate Nitrite Bromine Total Chorine Cyanuric acid Chromium/Cr Fluoride Package include: 100pcs/box 14-in-1 Swimming Pool Test Strips Note: Due to hand measure, the size may have 1-2cm error. Due to different monitor, the color may have difference..Total Alkalinity. Commonly used in swimming pools, spas and other industries. Cyanuric acid. The test paper has high precision, simple operation, convenient carrying. Total Chorine.