Indicator for detecting residual ethylene oxide

Details Indicator for detecting residual ethylene oxide Indicator for detecting residual ethylene oxide

G - Physics

01

N

150/26

G01N 21/29 (2006.01) G01N 31/22 (2006.01)

Patent

CA 1198972

TITLE OF THE INVENTION: INDICATOR FOR DETECTING RESIDUAL ETHYLENE OXIDE ABSTRACT OF THE DISCLOSURE: An indicator for detecting residual ethylene oxide comprising a substrate impregnated with a solution of 4-(4-nitrobenzyl)pyridine and an envelope of the substrate which is at least partially transparent and has low permeability to gaseous ethylene oxide is provided, the envelope being preferably made of a transparent plastic film. With the indicator, an amount of ethylene oxide remaining in various medical instruments, etc. may be estimated by the naked eye since the color of the indicator changes step by step in the course of the release of residual ethylene oxide.

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