50pcs 6-in-1 Swimming Pool Test Paper Residual Chlorine pH Alkalinity Hardness Test Strips Exceptional Bronze Acid

17S Test: There are 2 underwater pool test strips, keep in the air for about 15 seconds, then match the color of the strip to the color on the back of the bottle, it takes about 17 seconds. Swimming pool test strips are easy to use and suitable even for beginners.

Upgraded 6 inch (about 6 cm) 1 liter: pH test, total chlorine, no chlorine, total alkalinity, acid cleaning, total hardness, etc., more powerful than 5 or 4 pool test panels and liquid testing devices

Health: The test strips are used for water analysis of water from swimming pools, spas and hot tubs, and you can ensure the correct amount of chemicals is kept in the pool to avoid health problems and damage to equipment.

Easy to carry: Size about 3.9 * 1.6 inches

Environmental protection: The water quality of the swimming pool should be tested every week. One pack of test strips contains 50 test strips and pool seals as well as 5 moisture-proof packaging to ensure long-term storage.