TEST TUBE

1. A test tube for the quantitative measurement of minimal concentrations of gaseous components, comprising a reagent strip (11) impregnated with chemical reagents before which in the throughflow direction is arranged a gas-permeable flow-resistor element (6, 6a), characterized in that the latter is...

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Bibliographic Details
Main Author KRETSCHMER, WOLFGANG
Format Patent
LanguageEnglish
German
Published 25.05.1988
Edition4
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:1. A test tube for the quantitative measurement of minimal concentrations of gaseous components, comprising a reagent strip (11) impregnated with chemical reagents before which in the throughflow direction is arranged a gas-permeable flow-resistor element (6, 6a), characterized in that the latter is either : a) a fine-grained layer (6) of a chemically inert material which has as uniform as possible a granulometry, or b) a capillary tube (6a) inset with sealed rims in the test tube (1).
Bibliography:Application Number: EP19860116111