Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1997-07-11
1999-11-02
Soderquist, Arlen
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 83, 422 88, 436 38, 436 61, 436100, 436113, 436167, 436169, 436181, G01N 3048
Patent
active
059764678
ABSTRACT:
An indicator system provides a visual indication of the cumulative level of an airborne contaminant. An indicator has a transparent sheath with support medium treated with acid and a pH indicator, as the contaminant is adsorbed, the color changes along the medium. The indicator system may be used with an adsorptive filter system to predict the life of adsorption bed assemblies. A sample flow is taken upstream of the adsorption beds and is calibrated with a flow meter and valve. By monitoring the indicator, an accurate prediction of adsorption bed life may be made.
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Abstract of SU 1605191.
Dallas Andrew J.
Grafe Timothy H.
Graham Kristine Marie
Donaldson & Company, Inc.
Soderquist Arlen
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