JJG 919-2023 《Verificating Meters for pH Meters》 Related products

JJG 919-2023 "pH Meter verification instrument" is suitable for the first verification, subsequent verification and in-use inspection of pH Meters. The verification instrument covered by this standard is mainly used for standard DC voltage signal output, for calibrating and verifying the electrical meter part of instruments such as pH Meters, ion meters and automatic Potentiometric titrators. The verification instrument usually consists of a standard DC voltage signal generation system and a high resistance device (meter input Impedance detection system). The high resistance device needs to be able to provide resistance values of 1 GΩ and 3 GΩ. These devices are widely used in laboratory and industrial environments to ensure the accuracy and Reliability of pH measurement devices.