<p> </p> <p>16-in-1 water quality test strips x 50</p> <p>Water testing for swimming pools, spa pools, kids pools, drinking water &amp; more</p> <p>The 16 parameters are:</p> pH Hardness Cyanuric Acid Total Chlorine Free Chlorine Bromine Nitrate Nitrite Iron Chromium/Cr(VI) Lead Copper Mercury Fluoride Carbonate Root Total Alkalinity <p>Specifications:</p> Material: Paper Test targets: 16 Quantity: 100 Strips/Bottle Total Hardness: 0 ~ 100 Total Chlorine Range: 010 Free Chlorine Range: 0 ~ 10, Free Bromine Range: 022 pH Range: 6.8 ~ 8.4 Total Alkalinity: 0 ~ 240, Cyanuric acid <p>Package includes:</p> <p>50 x Water Quality 16-in-1 Test Strips &amp; instruction manual<br><br>Just soak the test paper in the water for 2 seconds, and then remove it. <br>Hold the test strip horizontally for 30 seconds. Compare with the colour table and read within 30 seconds.</p>