Peroxide indicator
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United States of America Patent
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Jan 26, 2016
Grant Date -
Feb 19, 2015
app pub date -
Feb 27, 2013
filing date -
Feb 29, 2012
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Abstract
An indicator for detecting peroxide can detect the peroxide through change of hue thereof by reacting the peroxide according to a predefined concentration and a predefined sterilization treatment condition thereof. The indicator has better resistance against weather or light and preservation stability than those of prior indicators including inorganic compounds or organic compounds as discoloration components, can clearly change an arbitrary hue thereof under suitable discoloration rate, and has visible distinguishability. The indicator for detecting peroxide includes powdery metal sulfide, that undergoes discoloration by reacting with the peroxide. In particular a discoloration layer including the metal sulfide is applied onto at least a portion of a base substrate.
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