Product Description: The KL-035Z automatic calibration pH meter is a waterproof pocket-sized pH tester with an IP55 waterproof rating, displaying both temperature and pH values. It features a two-point button calibration function. During calibration, simply place the instrument in the corresponding standard buffer solution and press the CAL (calibration key). The device will then automatically calibrate the data. Applications include aquariums, aquaculture, hydroponics, swimming pools and hot springs, school laboratories, chemical industry, food or beverage manufacturing, textile dyeing, paper or pulp bleaching, printing, cooling towers, boilers, cleaning or wastewater treatment, etc. Calibration solutions (liquid or powder) and various packaging options can be provided according to customer requirements.