7 in 1 Swimming Pool Test Strips - With these PH test strips, you can measure 7 important parameters once: PH value, total taltality, hardness, nitrate, nitrite, bromine, total chlorine. With the test strip you can check in just a few seconds whether the pool water quality is in optimal condition. Quick and accurate measurementSimply dip the test strips into the water for 2 seconds, then take it out and lay it flat for 15 seconds, compare the pool PH tester with the color chart on the bottle, then the results will be achieved. Convenient for beginners. Easy to carry and storeEach pH test bottle contains 50 test papers which are small and easy to take anywhere you want to test water quality . The sealed bottle protects the test strips from moisture for long-term storage. High Accuracy: The pH test strips are made of premium imported filter paper. Each swimming pool tester with 7 color indicators offers high accuracy and reliable instant reading. Multi-function water tester Not only suitable for swimming pool, but also for testing drinking water, spa, hot tub, pond, aquarium, fountain, tank, school laboratories, bathtub, sewage and other liquids. Ideal water quality makes life healthier and safer. For health, please use water quality test strips to determine water quality standards. Number of pieces delivered: 50 coins luckymeet