| 摘要 |
PURPOSE:To simplify a handling and simultaneously, to improve a reliability by packaging the laminated body of an indicator colored with the existence of a heated steam and a gas permeable body by means of a casing in which a small hole is provided. CONSTITUTION:An indicator pack is composed by packaging the laminated body of an indicator 3 colored with the existence of the heated steam and the gas permeable body by means of a casing 2 in which a small hole 5 is provided in one part. The heated steam penetrates the internal part of a gas permeable body 4 from the small hole 5 of the casing 2 and is conducted to the central part of the indicator pack. When the steam attains to the indicator 3, the indicator 3 is heated and colored. Thereafter, the casing 2 is broken, and the colored condition of the indicator 3 is confirmed. |
