Fluid handling apparatus

Details Fluid handling apparatus Fluid handling apparatus

1975-05-22

1976-09-28

Yudkoff, Norman

Chemistry: physical processes

Physical processes

Crystallization

734254P, 734256, 222309, 222389, B01L 302, G01N 110, G01N 114

Patent

active

039828999

ABSTRACT:
An apparatus for transferring fluid including a pipet or other similar vessel having an open top end and an open bottom end; a pipet-operating assembly including means for retaining the top end of the pipet; a flexible suction and pressure tube operatively connected to the pipet retaining means; vacuum-operated syringe means connected to the suction and pressure tube for aspirating a preselected amount of liquid into the pipet and for discharging the liquid from the pipet; tubular means for supplying a partial vacuum to the syringe means; and flexible, tubular means for selectively venting the supply of partial vacuum to the syringe means, the pipet-operating assembly including venting valve means for opening and closing the tubular venting means.

REFERENCES:
patent: 2596560 (1952-05-01), Johnson
patent: 3193148 (1965-07-01), Anthon
patent: 3244009 (1966-04-01), Tietje et al.
patent: 3327900 (1967-06-01), Goda
patent: 3492876 (1970-02-01), Bull et al.
patent: 3612359 (1971-10-01), Sundholm
patent: 3727614 (1973-04-01), Kniazuk
patent: 3805998 (1974-04-01), Croslin

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