Periodically activated constant pressure maintaining pistoned ch

Details Periodically activated constant pressure maintaining pistoned ch Periodically activated constant pressure maintaining pistoned ch

1990-02-26

1992-02-18

Noland, Tom

Measuring and testing

Sampler, sample handling, etc.

Capture device

7386386, G01N 114

Patent

active

050883356

ABSTRACT:
A plurality of liquid samples are introduced successively to and stored in a variable volume chamber formed in a sample container by periodically establishing communication between the chamber and a liquid source and increasing the volume of the chamber by the exact amount of the sample that is introduced into the chamber, and without varying the pressure of the liquid entering or accommodated in the chamber. The chamber remains at all times completely filled with liquid.

REFERENCES:
patent: 3789670 (1974-02-01), Rosenwald
patent: 3793888 (1974-02-01), Rosenwald
patent: 4037475 (1977-07-01), Topham
patent: 4172670 (1979-10-01), Welker
patent: 4459865 (1984-07-01), Welker
patent: 4463599 (1984-08-01), Welker
patent: 4527436 (1985-07-01), Jones
patent: 4532813 (1985-08-01), Rinehart
patent: 4794085 (1988-12-01), Jessop et al.
patent: 4835109 (1989-05-01), Trisciani et al.

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