1.pH tester. pH meter. Operation: Click on the power switch to turn on, immerse the probe in the water and the pH value/temperature is displayed on the display. With the exception of swimming pool or whirlpool water, it is not recommended to immerse the detector in water. pH meter. 2.Pool accessories. : The large screen shows the test results for pH value and chlorine content for a convenient and accurate reading. It is small and easy to carry and can ensure the , comfort and non corrosiveness of your swimming pool/hot spring water. Laboratory instruments equipment. 3.chlorine tester. Aquarium pH meter. Easy to use: it is very suitable for easily testing the pH and CL2 value of water without using chemical reagents. There are not too many steps required. It is an ideal tool to keep swimming pools or spas in a chlorine and pH range without chemicals or guesswork. pH meter for aquarium tester. 4.pH meter. Application: An electronic tester that tests the pH value and chlorine content (Cl2) in water and monitors the pH value and chlorine content of swimming pools, thermal baths and various water sources in a conventional way. The recommended chlorine content for pools and spas is 1.2 to 1.7 ppm, and the recommended pH value for pools and spas is 7.2 to 7.8.