Device and process for drawing off very small quantities of powd

Details Device and process for drawing off very small quantities of powd Device and process for drawing off very small quantities of powd

1980-11-05

1982-09-21

Goldstein, Herbert

Measuring and testing

Sampler, sample handling, etc.

Capture device

G01N 114

Patent

active

043500498

ABSTRACT:
The invention is directed to an apparatus for drawing off powder in metered quantities of from about 0.5 to 10 mg, comprising a tubular member having a dosing chamber at one end, the chamber having walls consisting of porous material and the outer end of the chamber walls being air-tight, and being provided at the other end with a means for connecting the tubular member to vacuum and/or compressed air sources. The invention is also directed to a method of using such an apparatus.

REFERENCES:
patent: 2423173 (1947-07-01), Brady et al.
patent: 3589199 (1971-06-01), Levin

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