16 IN 1 WATER TEST STRIPS: Drinking water test strips are contain 16 paramete, it can test Total Alkanlinity,pH,total hardness,Cyanuric Acid,total Chlorine, Free Chlorine,Free Bromine,Nitrate,Nitrite,Iron,Chromium,Lead,Copper,Mercury,Fluoride,Carbonate root EASY & FAST TEST KIT: ONLY 3 Steps to get accurate results.Frist, Simply dip one test strip into water compatible 2seconds; Second, remove the test strip and hold it horizontally compatible 30seconds; Third, comparing strip to color chart compatible the reference. WIDE USAGE WATER TESTING STRIP: The test strips are apply compatible testing drinking water, home faucets, well water, tap water, pool, hot tub spa and aquarium and quality test. compatible healthy, please use the professional drinking water test strips to detect water quality standards. 100PCS WATER TEST KIT: The water testing kits compatible drinking water including 100 Strips that means you can test drinking water compatible 100 times compatible anytime. The economical and convenient water testing kit compatible home and school projects. color:As shown Material:Paper Package Contents: 1 set x water testing kits compatible drinking water(100Pcs) 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.