General description 5 in 1 Electronic pH Meter with TDS, EC, Salinity, and Temperature measurement capabilities. This multifunctional water quality tester is designed to easily assess the purity or pollution levels of various liquid samples, making it ideal for home use, including aquariums, swimming pools, and drinking water. Technical specifications Measurement Parameters: pH, TDS, EC, Salinity, Temperature Temperature Range: 0℃ to 60℃ Calibration: pH 4.00, pH 6.86, pH 9.18 calibration powders included Display: Green backlit LCD Waterproof Rating: IP67 Installation Factory calibrated; recalibration required after long periods of inactivity or frequent use. Usage Suitable for measuring water quality in aquariums, swimming pools, garden ponds, bathtubs, and drinking water. Can also be used for testing reverse osmosis systems, spas, soap mixtures, food, wine, and beer. One-button reading lock function allows you to lock the reading even when the tester is removed from the sample. Other