Full history time-temperature indicator system

Details Full history time-temperature indicator system Full history time-temperature indicator system

2007-11-06

2007-11-06

Verbitsky, Gail (Department: 2859)

Thermal measuring and testing

Temperature measurement

Composite temperature-related paramenter

C374S162000, C374S159000, C116S216000

Reexamination Certificate

active

10110498

ABSTRACT:
A full-history time-temperature indicator system which is capable of exhibiting a time-temperature dependent and visually detectable chemical reaction, useful for monitoring the time and temperature exposure of food products. The system comprises an immobilized reactant, such as Fe3+, and a mobile reactant, such as Fe(CN)64-, initially contained in separate compartments, and separated by a sealing. The system is activated by removing a sealing between the compartments whereby the mobile reactant in a time-temperature dependent manner is brought into contact with the immobilized reactant resulting in a visually detectable reaction signal.

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