Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Calorimeter
Patent
1988-09-28
1991-03-19
Hill, Jr., Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Calorimeter
422 59, 422 8205, 422 86, 422 88, 427 2, 427296, 436 68, 436165, 436178, G01N 2178
Patent
active
050009192
ABSTRACT:
A colorimetric test tube having a colorimetric indication which includes a simple detection system for testing gases dissolved in liquids. The test tube has an indicator for the colorimetric indication of gaseous substances to be detected and it has an opening covered against the environment to be tested with a hydrophobic membrane which is permeable to the substances whose presence is to be detected and which can be used for indicating the presence of gases dissolved in liquids. The membrane is advantageously sealed with a covering which dissolves upon immersion of the test tube in a liquid.
REFERENCES:
patent: 2929687 (1960-03-01), Buchoff
patent: 4071319 (1978-01-01), Nugent
patent: 4275031 (1981-06-01), Fischer et al.
patent: 4325890 (1982-02-01), Tamers
patent: 4557902 (1985-12-01), Mussman
patent: 4790857 (1988-12-01), Miksch
Hackh's Chemical Dictionary, 4th edition, McGraw-Hill, Inc. 1969, p. 611.
The Merck Index, 10th Edition, Merck & Co., Inc.: Rahway, N.J., 1983, pp. 1220-1221.
Dragerwerk A.G.
Hill Jr. Robert J.
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