Pipetting apparatus

Details Pipetting apparatus Pipetting apparatus

1976-12-23

1978-05-30

Yasich, Daniel M.

Measuring and testing

Measuring vessel

128218P, 141 27, G01N 114

Patent

active

040916774

ABSTRACT:
A pipetting apparatus comprising a housing, a liquid receiving tube attached to the lower end of the housing and receiving a predetermined amount of a liquid sample therein, a cylinder piston device disposed in the housing for applying vacuum pressure on the upper end of the liquid receiving tube for sucking a liquid sample into the tube, a manually operable device for actuating the cylinder piston device, an air inlet for directing compressed air into the housing, and a manually operable valve for directing compressed air either to the upper end of the liquid receiving tube or to atmosphere.

REFERENCES:
patent: 1671814 (1928-05-01), Davenport
patent: 1921411 (1933-08-01), Johann
patent: 2153105 (1939-04-01), Szecsi
patent: 2771217 (1956-11-01), Brown et al.
patent: 2994349 (1961-08-01), Demos
patent: 3184122 (1965-05-01), Nerenberg
patent: 3217761 (1965-11-01), Shapiro
patent: 3410664 (1968-11-01), Fielding
patent: 3732735 (1973-05-01), Cohen
patent: 3869068 (1975-03-01), Chen
patent: 3963061 (1976-06-01), Kenny

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