Pipettes

Details Pipettes Pipettes

1975-02-26

1976-02-03

Swisher, S. Clement

Measuring and testing

Measuring vessel

B01L 302

Patent

active

039357341

ABSTRACT:
A mechanical pipette having a fixed stroke for aspirating and discharging a predetermined volume of liquid into and from a reservoir. A measuring piston controls the volume of liquid drawn into the reservoir and a substantially larger piston assures that all of the liquid in the reservoir is expelled therefrom on a discharge stroke. On the discharge stroke, a mechanically actuated valve is opened to admit air being compressed by the substantially larger piston into the reservoir.

REFERENCES:
patent: 3834590 (1974-09-01), Robinson et al.

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