This standard specifies the type and basic parameters, technical requirements, test methods, inspection rules, marking, packaging and storage of micro-metering pumps. This standard is suitable for micro-piston metering pumps, micro-diaphragm metering pumps, and micro-advection metering pumps that transport corrosive and non-corrosive liquids with a temperature of -30~60°C, a viscosity of 0.3~100 mm^(2)/s, and no solid particles. Pumps and micro-electromagnetic metering pumps.