The PH-010 foldable 3-in-1 pH meter features a foldable structure, allowing immediate measurement upon unfolding and enabling users to adjust multiple angles for testing liquids. It automatically calibrates errors caused by temperature variations. With a compact and lightweight design, the product can be easily carried in a pocket. The replaceable electrode allows reuse of the same main unit, offering convenience and environmental friendliness. The ABS shell is easy to clean, simplifying maintenance. Ambient temperature, relative humidity, and pH values measured by the instrument can be directly read from the LCD screen simultaneously.