Our advanced 9-in-1 water quality test kit enables you to identify important water quality parameters including Water Hardness, Iron, Lead, Nitrates, Nitrite, Total Chlorine, Free Chlorine, Bromine, Carbonates, , Cyanide Uric acid, ammonium chloride, fluoride, copper and pH. This comprehensive water testing solution helps you achieve and maintain optimal water quality for swimming pools, hot tubs, aquariums and everyday drinking water. This water testing kit prioritizes your convenience with a simple 3-step process. Immerse the test paper in water for 2 seconds, take it out and place it horizontally for 30-60 seconds without shaking off the excess water, then compare it with the color chart, the accuracy is up to 99%. Our kit is designed so simply that even children can use it, bringing lab results directly to the comfort of your home without spending extra time or money. Versatility is one of the key aspects of our water testing kits - use them for a of water testing needs such as drinking water, swimming pools, spas, ponds, aquariums and even industrial wastewater. Our professional water quality test strips are a valuable tool for your home, laboratory or school to you are complying with water quality standards to protect the health of you and your family. The home water testing kit comes with 100 test strips. Each kit incorporates safety measures to the quality and condition of your test strips. The user-friendly container plus detailed color card ensures you can conduct water quality testing anytime, anywhere. Remember to tighten the cap after taking out the test strip. Taking seriously, we are committed to quality control on every package and batch. The result is clean water that promotes healthier, happier lives. If you face any problem while using our water test kits, please contact us to get efficient and satisfactory solutions from our water test kit experts. Material: paper Color as shown Package Contents: 1 x Water Test Kit Only 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.