Features:1. Upgrade 14 in 1: Test total alkalinity, pH, hardness, lead, copper, iron, mercury, chromium/chromium (VI), bromine, nitrate, nitrite, residual chlorine, fluoride, sulfite2. Health: Test strips are used for drinking water, faucets, well water, fresh water tanks and more water quality tests. Use professional drinking water test strips for health to test water quality standards.3. Easy to use: Dip the drinking water test paper into the water for 5 seconds, keep it in the air for about 30 seconds, and then adjust the color of the back of the bottle to get the reading. Even for beginners, drinking water test strips are easy to use.4. Environmental protection: Water quality should be tested every week. A pack of our test strips contains 100 drinking water test strips.5. Easy to carry, guaranteed: size 14 x 4 cm, weight 7 ounces, easy to carry. The water quality of drinking water can be found in essieny test paper in just 35 seconds. Product information:Drinking water is indispensable in our lives! Polluted water sources can cause many health problems, so it is important to regularly test the quality of drinking water.14 parameters appear simultaneouslyTotal alkalinitypH valuehardness.▶ beltcopper.▶ iron▶ Mercury.▶Chromium/chromium (VI).▶ Bromine▶Nitrate▶Nitrite▶Residual chlorine▶Fluoride Easy to use:1. Immerse the test strip in water for 5 seconds.2. Take out and wait for 30 seconds.3. Compare the drinking water test strip to the color chart on the bottle. Package included:1 pack of drinking water test strips (50 pieces) Tips:Keep away from light and moisture.After removing the strap, quickly replace the cover.Do not remove disikcanentsDo not touch the test area of the reagent strip.