SuperCheck Smart 6-Way Swimming Pool and Spa Water Chemistry Test Strips - 50 Strip Pack- Test pH- Chlorine- Bromine- Hardness and More

Test Range: Measuring range of total chlorine: 0-1-3-5-10 Residual chlorine test range: 0-1-3-5-10 Acid-base value (PH) test range: 6.8-7.2-7.4-7.6-8.0-8.4 Total alkalinity test range: 0-40-80-120-180-240 Cyanic acid test range: 0-30-50-100-150-240 Total hardness test range: 0-100-250-500-1000 Fast and easy to use: Just immerse a piece of test paper in the water for 2 seconds, take it out and wait for 15 seconds, and compare the color change of each panel with the color table on the side of the bottle to obtain accurate water quality results.