Description: Material:Paper Model:2 in 1/3 in 1/4 in 1/5 in 1/6 in 1 Quantity:50 Strips/Bottle Total Chlorine Test Range:0~10ppm Free Chlorine Test Range:0~10ppm pH Test Range:6.8~8.4 Total Alkalinity Test Range:0~240ppm Total Hardness Test Range:0~1000 Cyan-uric Acid Test Range:0~240 Package included: 50pcs Set Swimming Pool Test Strips 💧【Test for 7 Parameters 】 Test strips can be examined for pH level, total hardness, total alkalinity, free chlorine, bromine, total chlorine, and cyanuric acid. Can provide more comprehensive information about water balance. 💧【High Accuracy】Swimming and pool test kits are precisely calibrated, with unique, non-bleeding color liner, which can greatly ensure the quality of the product and the stability of the measurement. 💧【Easy to Use & Read】With the color chart attached to the bottle, it's extremely simple to use our pH testing strips. Just dip in any liquid and compare with the color chart. 💧【Easy to Store】50 strips per kit seal well with 5 individual moisture-proof packages in one plastic bottle to ensure the test strips can store for 2 years. 💧【Widely Applications】 These strips are widely used for swimming pool, spa, bath, hot tub and other water chemistry testing. Researches show that you should test your pool and spa at least twice a week, so you can monitor your water quality at regular intervals!