Hand-held micropipettor with improved accuracy of liquid volumes

Details Hand-held micropipettor with improved accuracy of liquid volumes Hand-held micropipettor with improved accuracy of liquid volumes

1976-05-03

1977-10-18

Swisher, S. Clement

Measuring and testing

Measuring vessel

222146C, B01L 302

Patent

active

040540626

ABSTRACT:
A hand-held micropipettor having a construction to impede transfer of heat from a handle to a portion enclosing a piston chamber, and means for drawing room air along the piston to effect its cooling when the micropipettor is operated. A compressible piston seal is held in place with a retainer urged in an axial direction by a resilient element with an uniform force independent of the position of the piston.

REFERENCES:
patent: 3834590 (1974-09-01), Robinson
patent: 3855868 (1974-12-01), Sudvaniemi
patent: 3935734 (1976-02-01), Keegan

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