Method for metering biological fluids

Details Method for metering biological fluids Method for metering biological fluids

1982-06-10

1984-06-05

Marcus, Michael S.

Chemistry: analytical and immunological testing

Automated chemical analysis

With sample on test slide

7386411, 141119, 422 63, 422 66, 422100, 436 54, 436180, G01N 114, G01N 3506

Patent

active

044528990

ABSTRACT:
A method is disclosed for repeatedly and accurately depositing predetermined amounts of fluid, especially biological fluids, onto generally planar analysis slides. Fluid is aspirated into a disposable metering tip which is rapidly moved into a metering position where the fluid is expelled onto a slide. During movement of the tip into the metering position, a partial vacuum is created on the fluid in the tip, causing the fluid to be drawn up into the tip and thereby preventing fluid from being prematurely expelled onto the slide.

REFERENCES:
patent: 3484024 (1969-12-01), Jones et al.
patent: 4000974 (1977-01-01), Acord
patent: 4340390 (1982-07-01), Collins et al.
patent: 4347875 (1982-09-01), Columbus

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