| 摘要 |
1. Indicator of sterilization conducted in the presence of pressurized steam of the type comprising a support-plate (1) of which at least one of the faces contains one or more spots (2) of a reagent changing color in relation to the temperature, pressure, steam concentration and dwelling time in a sterilizer, and further comprising, a screen (3) constituted by a transparent film which is impervious to the liquids resulting from the sterilization operation and which entirely covers the said spots of reagent, characterized in that said transparent screen (3) is constituted by a complex film composed of a sheet of polypropylene or polyurethane on the inside and of a sheet of polyester or of polyamide on the outside, which film is bonded by melting, in discontinuous and leaky manner, to said support-plate, so that the steam can infiltrate between said screen and said support-plate. |
