Thermal measuring and testing – Temperature measurement – Composite temperature-related paramenter
Patent
1991-08-16
1992-10-27
Shoap, Allan N.
Thermal measuring and testing
Temperature measurement
Composite temperature-related paramenter
374106, 116207, 116219, G01K 304, G01K 1112
Patent
active
051583631
ABSTRACT:
A steam sterilization indicator for indicating both exposure to steam and sterilization is provided. The steam sterilization indicator includes a backing member. A tablet formed of a compound having a first melting point and second melting point which is lower that the first melting point, the second melting point being the melting point of the compound exposed to steam is also provided. A wick is affixed to the backing member adjacent to the tablet. A steam permeable material covers the tablet and the wick. Upon melting, the tablet material is absorbed by the wick. A handle is affixed to the backing member. One end of the handle includes a steam exposure indicator formed of a color changing ink which changes color in the presence of steam.
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Platko Frank E.
Speelman Irving A.
Summer Ken
Kaplan Blum
Propper Manufacturing Company, Inc.
Shoap Allan N.
Worth W. Morris
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