Chemistry: analytical and immunological testing – Heterocyclic carbon compound – Hetero-o
Patent
1987-04-01
1989-05-02
Richman, Barry S.
Chemistry: analytical and immunological testing
Heterocyclic carbon compound
Hetero-o
422 57, 422 58, 436 1, G01N 3122
Patent
active
048267724
ABSTRACT:
Monitoring exposure to ethylene oxide using a dosimeter or monitoring device avoids using devices that collect a sample for future testing or devices that must be sent away for lab analysis. The device comprises a reactive coating including a layer of activated alumina particles coated with p-nitrobenzyl pyridine and ammonium chloride, and is adapted to instantly produce a color intensity change directly related to the dosage of the reactive coating to ethylene oxide upon the addition of a developer.
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Graphic Controls Canada Ltd.
Johnston Jill
Richman Barry S.
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