Testing tube and testing tube filter assembly therefor

Details Testing tube and testing tube filter assembly therefor Testing tube and testing tube filter assembly therefor

1982-05-07

1985-12-10

Turk, Arnold

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

55493, 210451, 210455, 422101, B01D 4610, G01N 2178

Patent

active

045579024

ABSTRACT:
A testing tube comprises a glass tube having breakable tips at each end which may be broken to facilitate the passage of gas to be tested through the tube. The tube is separated by a plurality of mounting elements for resilient discs into a plurality of separate chambers which includes a chamber having a breakable ampule therein and a chamber having a layer of reaction material therein. In addition, the test tube contains a filter element which is located between two adjacent chambers. The filter element comprises a tubular ring member which is insertable in the glass tube and has an outwardly flaring end adjacent one end which bears tightly against the walls of the tube and permits the insertion of a filter disc into the flaring end so that it rests against a support ledge in the bore of the ring member. The filter is held by a cover portion which includes a resilient ring having a bead which engages into a groove defined in the bore overlying the ledge.

REFERENCES:
patent: 3295686 (1967-01-01), Krueger
patent: 3463322 (1969-08-01), Gerarde
patent: 4123228 (1978-10-01), Frei et al.
patent: 4272479 (1981-06-01), Huneke et al.
patent: 4330297 (1982-05-01), Leichnitz

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