This standard specifies the terms and definitions, information confirmation, type and basic parameters, basic requirements, technical requirements, testing and inspection, inspection rules, marking, packaging, storage and quality commitment of electromagnetic diaphragm metering pumps. This standard is applicable to the environmental conditions of atmospheric pressure 86 kPa ~ 106 kPa, temperature -20 ℃ ~ 70 ℃, humidity 30% RH ~ 95% RH, transportation temperature - 15 ℃ ~ 85 ℃, and viscosity 0.3 mm2/s ~ 200 mm2/s electromagnetic diaphragm metering pump for liquids without solid particles (hereinafter referred to as "pump").