G - Physics – 01 – K
Patent
G - Physics
01
K
116/67
G01K 1/02 (2006.01) A61L 2/28 (2006.01) G01N 31/22 (2006.01)
Patent
CA 1148416
ICl 4542 June 1, 1979 IMPROVED STEAM STERILIZATION INDICATOR ABSTRACT An improved steam sterilization indicator is provided. The indicator includes a fusible material, in tablet form, depos- ited in an embossment in one end of a thin aluminum backing. A wicking strip is attached to the backing with one end of the strip being in close proximity to the fusible tablet. A clear plastic material covers the tablet and the strip and is adhered to the backing. The melting point of the fusible tablet is depressed in the presence of saturated steam. Upon melt, the material in the tablet is absorbed by the wicking strip, produc- ing a color front to provide an indication of the integration of time and temperature in the presence of steam. Various amounts of a binder are used in the tablet to provied a device which may be adjusted to reflect the thermal death curves of various types of microorganisms. The cover and the wick are bonded to the backing by an acrylic adhesive which also affects the rate of the indicator.
344525
Py Mah Corporation
Swabey Ogilvy Renault
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