Clean box

Details Clean box Clean box

1986-05-01

1987-08-04

Levy, Stewart J.

Measuring and testing

Sampler, sample handling, etc.

Capture device

738656, G01N 114

Patent

active

046837612

ABSTRACT:
A portable apparatus and method for collecting and testing ground water samples including a container (12) defining a chamber (14) in which a control atmosphere is established. A valve means (22) is included which is capable of bypassing water away from the chamber (14) and continuously admitting water samples to the chamber (14). A preferred method of collecting a ground water sample includes the steps of establishing a controlled atmosphere in the chamber (14), directing the flow of water into the chamber (14), collecting the water sample inside the chamber (14), and testing the sample inside the chamber (14) to prevent contamination from the air on the exterior of the chamber (14).

REFERENCES:
patent: 937309 (1909-10-01), Kelly et al.
patent: 2786740 (1957-03-01), Taylor et al.
patent: 3051163 (1962-08-01), Trexler
patent: 3536370 (1970-10-01), Evans et al.
patent: 4037475 (1977-07-01), Topham
patent: 4174632 (1979-11-01), Jansen
patent: 4411157 (1983-10-01), Babin et al.
patent: 4454773 (1984-06-01), Brunner et al.
patent: 4585060 (1986-04-01), Bernardin et al.

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