Liquid specimen transfer apparatus and method

Details Liquid specimen transfer apparatus and method Liquid specimen transfer apparatus and method

1994-01-10

1995-05-02

Recla, Henry J.

Fluent material handling, with receiver or receiver coacting mea

Processes

Battery grid pasting

141 26, 141 98, 141114, 141130, 422 63, 436180, 7386384, B65B 104, B65B 304

Patent

active

054110653

ABSTRACT:
A method of obtaining aliquots or samples from a liquid specimen collection container and an apparatus which automateally perforths those methods involves transferring a sample of liquid from a sealed non-deformingly expandable container containing gas and the liquid without contaminating the liquid remaining inside the container, and comprises (a) non-deformingly volumetrically expanding the sealed container sufficiently to reduce pressure therein below ambient pressure outside the container, (b) applying heat selectively to a locus on said enlarged container to non-invasively create a hole having a diameter effective to equilibrate the pressure inside the container with said ambient pressure without loss of liquid from the container, and (c) non-deformingly volumetrically reducing the container to expel liquid from the container through the hole.

REFERENCES:
patent: 4609017 (1986-09-01), Coulter et al.
patent: 5069364 (1991-12-01), McGill
patent: 5174961 (1992-12-01), Smith
patent: 5238031 (1993-08-01), Baeumer et al.
patent: 5265655 (1993-11-01), Hirsch

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