2-in-1 pH and Chlorine Meter, Portable Electronic Water Tester, Chlorine Water Quality Tester CL2 Measurement for Pools and Aquariums ️【ROBUST AND DURABLE】High-quality plastic casing, durable and sturdy, widely used for measuring: pH, RH, temperature, conductivity, EC/CF/TDS (PPM) of the solution or water. ️【MEASURE YOUR POOL WATER QUALITY WEEKLY】The pH level is one of the most important factors for pool water balance and should be tested and adjusted at least once a week. The pH level measures the acidity/alkalinity of the water in the pool. Chlorine kills bacteria, algae, and microorganisms. Cannot be used in saltwater. 【CAN HELP CONTROL CHLORINE LEVELS IN WATER】Too little chlorine leads to algae and bacteria growth, waterborne diseases, cloudy water, and insufficient water hygiene. Too much chlorine can cause irritation to eyes, nose, and skin. Also, keep in mind that pool chlorine is carcinogenic, and the level should be kept at the lowest necessary for complete disinfection. 【CLEAR DISPLAY】Large screen displays pH and chlorine test results for easy and accurate readings. 【WIDE RANGE OF APPLICATIONS】Specially designed for family-sized swimming pools or spas, this pH meter is the ideal small tool for home and laboratory applications. It can be used for drinking water, aquariums, swimming pools, tap water, hydroponics, spas, laboratories, and scientific testing.