導管(delivery tube[1])是化學實驗中常用的一種儀器,通常為中空的玻璃管或塑料管,有各種長短、口徑和彎曲形狀,在許多實驗中都有所應用。導管一般用作氣體或者液體流動的通道,與其他實驗設備配合使用,使氣體或者液體進入下一試驗設備。多個導管之間可以用橡皮管連接,導管端部還可以套上橡膠塞,用來連接其他器皿。
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