Multiple pipette samples

Details Multiple pipette samples Multiple pipette samples

1990-02-08

1991-03-19

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

7386332, 7386411, 7386414, 435301, B01L 302

Patent

active

050009214

ABSTRACT:
A pipette sampling device for removing and transferring a plurality of liquid samples consists of an improved structure which allows a low cost manufacturing process, the use of a minimum amount of material in such process, and a pipette cavity shaped such that hydraulic principles insure accuracy during filling and dispensing. The pipette sampling device is positionable within a filling tray which permits an initial filling of the pipettes by a liquid through capillary action, and an actuating device is then attached over the pipettes. The actuating device provides a vacuum so that the liquid is drawn into each pipette cavity until the walls and rims of all of the cavities are completely wetted and a stretched meniscus is formed at the top of each cavity. The actuator may then be utilized to effect the dispensing of the liquid in each pipette cavity through a provided pressure. To accomplish this process, the sampling device is constructed to include a manifold which is designed as an inflexible, rigid monocoque structure.

REFERENCES:
patent: 4511534 (1985-04-01), Bennett, Jr. et al.
patent: 4565100 (1986-01-01), Malinoff

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