Pipetter

Details Pipetter Pipetter

1979-08-24

1981-03-24

Woodiel, Donald O.

Measuring and testing

Measuring vessel

734254P, G01N 114

Patent

active

042572681

ABSTRACT:
A pistol-shaped pipetter capable of operation on a full range of pipettes from 0 to 25 ml and which has a pair of vacuum chambers which are activated by trigger-type devices on the pistol grip of the unit. With a small volume pipette the selector valve is placed in one setting wherein only one of the vacuum chambers is directly connected to the pipette. With a larger volume pipette, the selector valve is positioned so as to place both vacuum chambers in communication with it. A rapid discharge of the fluid in the pipette is achieved by trigger actuation while a fine, controlled discharge is achieved by an air bleed valve control.

REFERENCES:
patent: 3248950 (1966-05-01), Pursell et al.
patent: 3656351 (1972-04-01), Raczak
patent: 3754687 (1973-08-01), Norton
patent: 3855867 (1974-12-01), Roach
patent: 3954014 (1976-05-01), Andrews et al.

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