Fangrui Product Details Our 9 In 1 Water Test Kit Offers A Simple Yet Accurate Solution For Testing 9 Key Water Parameters In Drinking Water. Effortlessly Measure Total Alkalinity, Ph, Hardness, Iron, Copper, Lead, Nitrate, Nitrite, Fluoride. For Both Residential And Professional Use, It Ensures Comprehensive Water Quality Monitoring For Safe And Clean Environments. Quick Easy To Use: Follow The Intuitive, Non-technical Instructions With Clear Pictograms-no Expertise Needed! Simply Add 1 Drop Of Water Into Each Test Hole, Wait 15-, Then Compare With The Color Chart. Get Reliable Results In Seconds, Making Water Testing A Breeze For Everyone. Expert Standard: Engineered To Meet Professional Industry Standards, This Test Kit Guarantees Accurate And Results. Monitor 9 Vital Water Parameters Regularly To Maintain Optimal Water Quality, Ensuring Your Drinking Water , Safe, And Well-protected. Built To Last: Crafted With Materials, This Test Kit Withstands Multiple Uses. With Sufficient Testing Capacity For Regular Checks, I