Wide Range of Uses: The pH meter tester is an ideal tool for home and laboratory pH testing applications. It includes household drinking water, aquariums, swimming pools, tap water, hydroponics, spas, laboratory testing and scientific testing. Simple and Easy to Use: Suitable for easy use in testing the pH and CL2 of water, without any chemicals or guesswork. Quality and Accuracy: Made of high-quality plastic shell, it is sturdy and durable, with a longer service life. The tester is equipped with sensitive electrode sensors. The large screen displays the test results of pH value and residual chlorine content, and the readings are accurate. Chlorine content within the safe measuring range: 1.2-1.7 ppm, pH value within the safe measuring range: 7.2-7.8. Small and portable: Small size, light weight, easy to carry. Perfect for slipping into a travel bag or backpack. Keep it handy when traveling and test the water quality during a hotel stay. Make your trip safer. Product size: 19*4*15 cm