DROPPING MICROBOTTLE Russian patent published in 1995 - IPC

FIELD: measurement technology. SUBSTANCE: invention refers to investigation of liquid preparations. Microbottle for investigated preparation is manufactured in the form of smoothly bent tube with bushings and filament composed of lengths of different sections passed through holes of bushings and attached to drum for reeling out of one length with reeling up of other one. Liquid is discharged through hole of metering orifice. With rotation of drum length of filament having bigger section is sucked into tube through hole of bushing and one section is drawn out through hole. In this case portion of liquid equal to difference of volumes of lengths of filament entered tube and coming out of it is squeezed out through hole of metering orifice. EFFECT: simplified design, capability of work with supersmall doses of liquids. 4 cl, 2 dwg