This PH meter is designed for users to carry and operate on site or in the field. It can display PH value and temperature value at the same time. The instrument is suitable for the determination of water quality and PH value in tap water source monitoring, aquaculture, environmental protection, printing and dyeing, electroplating, beverage industry and scientific research units. Feature:Model:PH-20WResolution: 0.1 pHAccuracy: ±0.1 pHDimension: 40*185mmWeight: 88 kgSincere Service：All products have been checked and packaged in good condition before shipping. If you have any questions or need any help, please feel free to contact us!