A Bowie and Dick type prevacuum steam sterilization test pack (10) for insertion into a sterilization chamber for indicating the presence of unacceptable levels of uncondensable gas, comprises a housing (12), a heat sink (30) and an indicator (40). The housing (12) defines a single chamber (14) having a large open end (16), a relatively small closed end (20) opposite the open end (16), and sidewalls (22) smoothly tapering from the open end (16) to the closed end (20). The heat sink (30) is disposed in the chamber (14) and extends substantially from the open end (16) to the closed end (20) to define a path through which the steam travels from the open end (16) toward the closed end (20), the path providing sufficient exposure of the steam to the heat sink so that the steam condenses within the path, releasing any noncondensable gas associated with the steam, and forcing the noncondensable gas so released toward and concentrating such noncondensable gas within the closed end (20). The indicator (40) which may comprise a heat- and humidity-sensitive strip, is disposed in the chamber (14) adjacent the closed end, for indicating the presence of noncondensable gas concentrated therein.
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机译：Bowie and Dick型预真空蒸汽灭菌测试包（10），用于插入灭菌室以指示存在不可接受水平的不凝性气体，包括外壳（12），散热器（30）和指示器（40）。壳体（12）限定了单个腔室（14），该腔室具有大的开口端（16），与开口端（16）相对的相对较小的封闭端（20）以及从开口端（16）平滑地逐渐变细的侧壁（22）。 ）到封闭端（20）。散热器（30）设置在腔室（14）中，并且基本上从开口端（16）延伸到封闭端（20），以限定蒸汽从开口端（16）流向封闭端的路径。在端部（20）上，该路径使蒸汽充分暴露于散热器，从而使蒸汽在该路径内冷凝，释放出与蒸汽相关的任何不凝性气体，并迫使如此释放的不凝性气体流向并集中在该不凝性气体中。封闭端（20）。可以包括对热和湿度敏感的条的指示器（40）被布置在腔室（14）中靠近封闭端的位置，用于指示存在浓缩在其中的不可冷凝气体。
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