Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si 16 IN 1 WATER TEST STRIPS: Drinking water test strips are contain 16 paramete, it can test Alkanlinity,pH, hardness,Cyanuric Acid, Chlorine, Free Chlorine,Free Bromine,Nitrate,Nitrite,Iron,Chromium,Lead,Copper,Mercury,Fluoride,Carbonate EASY & FAST TEST KIT: ONLY 3 Steps to results.Frist, Simply dip one test strip into water suitable for 2seconds; Second, remove the test strip and hold it horizontally suitable for 30seconds; Third, comparing strip to color chart suitable for the reference. WIDE USAGE WATER TESTING STRIP: The test strips are apply suitable for testing drinking water, home faucets, water, tap water, pool, hot tub and aquarium and test. suitable for healthy, please use the professional drinking water test strips to detect water standards. 100PCS WATER TEST KIT: The water testing kits suitable for drinking water including 100 Strips means you can test drinking water suitable for 100 at home suitable for anytime. The economical and convenient water testing kit and school projects. color:As shown Material:Paper Package Contents: 1 set x water testing kits suitable for drinking water(100Pcs) Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.