CONVENIENT AND COST EFFECTIVE: Our water test kit is a convenient and easy-to-use way to test the quality of your water from the comfort of your home. It's a cost-effective alternative to lab testing, which can be expensive and time-consuming. MULTIPLE TEST: The package Included 100 water testing strips, 1 testing powder of e.co.li, 1 test tube, and an instruction manual. This water test strips allows you to test your water multiple times to accurate and consistent results. COMPREHENSIVE TESTING: Our water testing kit can test for water quality parameters, including pH, chlorine, hardness, cyanuric acid, bromine, nitrate, and nitrite levels, giving you a comprehensive analysis of your water. EASY-TO-READ & EXTENSIVE USE: Our water hardness test kit provides easy-to-read results that are color-coded for each parameter, making it simple to interpret and understand. It can be used to test tap water, well water, aquarium water, pool water, mountain ,and other types of water sources. ACCURATE RESULTS: This water tester for drinking water or well water test kit provides accurate results that can help you identify potential problems with your water, such as high levels of contaminants or imbalanced pH levels. Color: As Shown Material: paper Package Contents: 1 set 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.