PH meter is mainly used to accurately measure the pH of liquid medium commonly used equipment. According to the volume of the equipment, it is divided into pen type, portable type, desktop type and online type for online connection monitoring and measurement. According to the measurement accuracy, it is divided into 0.2 grades, 0.1 grades, 0.01 grades and 0.001 grades. The smaller the number, the higher the precision. According to the display mode of reading, it is divided into indicating type and digital type.
