Nozzle, pump and length measurement
Nozzle: bayonet (half bayonet aluminum, full bayonet aluminum), the screw is all plastic, but some are covered with a layer of aluminum cover, one seat of anodized aluminum.
Lotion pump: The vacuum and suction pipes are all screw ports. The large screw port and head cap can also be covered with a layer of anodized aluminum. Divided into two kinds of sharp beak and duckbill.
Hand-washing pump: The caliber is too large, all are screw ports, and the large screw port and head cap can also be covered with a layer of anodized aluminum aluminum cover. Steps are generally threaded, and no steps are generally left and right knobs.
Length measurement: the length of the suction pipe (from the gasket to the end of the tube or the length of the FBOG), and the exposed length. And the length measured under the big hood (equal to the length from the bottle shoulder to the bottom of the bottle).
Specification classification: It mainly depends on the product inner diameter (the inner diameter is the innermost diameter of the pump) or the height of the large circle.
Metering measurement method: (actually the dose of liquid ejected by the nozzle at one time) There are two methods: peeling measurement method and absolute value measurement method. The error is within 0.02g. The size of the pump body is also used to distinguish the measurement.