103B Chlorine & PH Tester Meter Kit, Handheld Portable 2 in 1 Digital Water Quality Analysis Monitor, you can mention these CL2 MeterOOTDTYfeatures: a great tool for keeping your pool or spa within safe chlorine and PH ranges, without any chemicals or guesswork. Safe for the chlorine-based tablet pool, the pH must be correct. If the pool water is not balanced correctly, the chlorine disinfectant will not work at full force to kill germs. Electro-tester for testing pH and chlorine (Cl2) levels in water for routine monitoring of pH and chlorine levels in swimming pools, spas, and various water sources. The use of high-quality ABS, durable and longer service life. The tester has a sensitive electrode sensor. The large screen displays the pH and chlorine test results for accurate reading. An essential tool for fast and accurate ph and chlorine readings, as chlorine is most commonly used to disinfect water by killing germs, algae, and microorganisms. Specification: Material: Plastic Size: 19x1 2cm/7.5x4.7in Package Includes: 1 x Chlorine PH Meter with Probe (Battery Not Included)Note: Please allow 1-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.