【Test paper function】: The color of the LCD will change with the pH value, just like the litmus test paper, which is very convenient and practical. 【Accurate and practical】: It is convenient to read the data and save, and the LCD display records the measured value, which is convenient to read and save. Powered by a large capacity button battery, it has a long service life and can be used continuously. High-definition backlit display, night reading is clearer; High precision automatic calibration, accurate reading, more convenient for your use. Reset function】Press and hold the power button for 3 seconds in power-on state, then release. When the screen appears: Power off data storage function】: The data will be automatically saved once the battery is removed, and the storage time is one month, which is very durable. 【Wide application】: The instrument is widely used in aquariums, daily household, hydroponics, beer brewing, swimming pools, laboratories or any other liquid test, such as
