Water Testing kits for Total Alkalinity, pH, Hardness, Cyanuric acid, Total Chlorine, Free Chlorine, Nitrate, Nitrate, Iron, Chromium/, Lead, Copper, Mercury, Fluoride,Carbonate Root. These 16 testing parameters are main factors that influences your water quality safety, like filtered water, well water, tap water, drinking water or any other water sources.specializes in water testing & measuring area for years and adopts the most advanced technology on our products to assure the profession and accuracy of water quality monitoring.To avoid polluting your water, we equipped a dropper and a tube to help you collect to-be-test water rather than put the strip into the water directly. Besides, if the to-be-test water is not deep enough to hold the strip, with the assistance of the long enough matching tube, it would be easy to test 16 parameters at the same time.drinking water test strips supports 16 parameters and 50 count of strips, which equals 800 water tests with one piece of product. This would from lab testing these separately at the cost of hundreds .Material: Papercolour: As shownPackage Contents:1 set x Water Test KitsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.