G - Physics
12
B
116/67
G12B 1/00 (2006.01)
Patent
CA 1118646
ABSTRACT OF THE DISCLOSURE There is provided a freeze indicator comprising a frangible container housing a liquid which expands upon freezing, thereby fracturing the container. The liquid has a nucleating agent disbursed therein. The nucleating agent and the liquid have substantially similar molecular space groupings whereby undercooling of the liquid is substantially prevented. In a further embodiment, a surfactant is added to the liquid to provide an increased surface area of contact between the nucleating agent and the liquid wherein nucleation more readily occurs. The surfactant further provides a decrease in surface tension between the container when broken and the liquid, whereby an immediate indication of freezing is provided.
369922
Akzona Incorporated
Swabey Ogilvy Renault
LandOfFree
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