Method and apparatus for transferring and dispensing small volum

Details Method and apparatus for transferring and dispensing small volum Method and apparatus for transferring and dispensing small volum

1998-04-13

2000-04-18

Noland, Thomas P.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

7386472, 436180, B01L 302, G01N 112, G01N 3510

Patent

active

060511907

ABSTRACT:
The invention relates to the transfer and distribution, notably in a biological or chemical analysis, of a small amount of liquid. The invention relates notably to a method which consists of providing a transfer tool (18) having at least one rod (10) whose lower surface (12) of pre-determined cross section is wettable and of which at least one side surface (14) is non-wettable; immersing the rod (10) into a reservoir containing a liquid, for a pre-determined period of time and at a pre-determined depth; removing the rod (10) from the reservoir so that a liquid drop is retained on the lower surface (12) of the rod (10); positioning the rod (10) over a receptor medium; and placing the drop in contact with a surface of a receptor medium. The invention also relates to the transfer tool (18) which has in its structure at least one rod (10) and to a method for making the transfer tool (18).

REFERENCES:
patent: 3526132 (1970-09-01), Weintritt
patent: 3600156 (1971-08-01), Clapton et al.
patent: 3787378 (1974-01-01), Blank
patent: 3918034 (1975-11-01), Orth, Jr.
patent: 4085780 (1978-04-01), Holley
patent: 4339241 (1982-07-01), Stocker
patent: 4492759 (1985-01-01), Gorman et al.
patent: 4808402 (1989-02-01), Leibowick et al.
patent: 5133781 (1992-07-01), De Rosa et al.
patent: 5756050 (1998-05-01), Ershow et al.

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