One-stop water quality testing solution: Contains 800 pH test strips, 50 16-in-1 water test paper kit, TDS water quality tester, test tube with dropper, and travel storage bag. No need to purchase separately, you can have three mainstream water quality testing tools at once. [More than 30% Cost Saving]The price of this water quality testing kit is only 70% of the price of purchasing three water quality testing tools separately, saving 30% of the cost while enjoying more discounts and . Test 16 indicators: can test 16 important indicators in water, such as total alkalinity, pH value, hardness, carbonate radicals, total chlorine, free chlorine, free bromine, nitrate, iron, chromium/chromium (VI), lead , copper, mercury, fluoride, etc. Easy and fast operation: It is very simple to use, the instructions and get accurate results in minutes. You can test any water source, such as drinking water, swimming pool water, fish tank water, outdoor lake water, maple syrup making, science experiments, etc. [Easy to carry] Comes with a travel storage bag, which is convenient for organizing and carrying testing tools for water quality testing anytime and anywhere. Whether you're traveling or exploring the outdoors, you can take it with you to safe and healthy drinking water. Material: plastic+paper colour: As shown Package Contents: 800 x pH test strips 50 x 16-in-1 water quality test paper kit (packaging styles and colors are sent randomly, Cannot be chosen the specific color and styles) 1 x TDS water quality tester (test tube with dropper) 1 x travel storage bag 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.