Scale-marked pipet tip for precision dispensing of fluids over a

Details Scale-marked pipet tip for precision dispensing of fluids over a Scale-marked pipet tip for precision dispensing of fluids over a

1991-05-17

1993-06-29

Kummert, Lynn M.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

436180, 7386402, 7386461, 738663, G01N 110

Patent

active

052232255

ABSTRACT:
An improved "reference" pipet tip supports a number of volume scale ranges on its external body--preferably a scale for each of small volumes 0.5 microliters through 5 microliters, medium volumes 5 microliters to 50 microliters, and large volumes of 50, 100, and 150 microliters--because the geometry of its interior reservoir is non-uniform. In particular, the pipet tip's interior reservoir increases in diameter, and in contained volume, at a first rate, and in response to a first conical angle of rotation, at its distal end, tip, region. The interior reservoir increases at a different, larger, rate at its proximal end region, which proximal end region is connected to a pipettor. Fluid volumes in a broad range from. 0.5 microliters to 150 microliters are typically measurable at accuracies of better than 10%.

REFERENCES:
patent: 3500689 (1970-03-01), Band
patent: 3864979 (1975-02-01), Ayres
patent: 3891392 (1975-06-01), Betts et al.
patent: 4267729 (1981-05-01), Eddelman et al.

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