试管 Test tube
（重定向自Culture tube）
试管是一种实验室玻璃器皿。
是由玻璃构成的如同手指形状的管子，顶端开口，通常是光滑的，底部呈"U"形。
试管的长度从几厘米到20厘米不等，直径在几毫米到数厘米之间。
Culture tube
中文百科
英语百科
Test tube 试管
（重定向自Culture tube）
![](/Images/godic/202501/07/Two_small_test_tubes_held_in_spring_clamps0651.jpg")
![Louis Lumière with a microscope and some test tubes.](/Images/godic/202501/07/Louis_Lumiere_with_microscope_and_test_tubes0651.jpg")
![Samples of human blood collected for blood tests.](/Images/godic/202501/07/Blood_test0651.jpg")
![Eight cavity test tube mold courtesy of Lake Charles Manufacturing.](/Images/godic/202501/07/Tube_mold0651.gif")
A test tube, also known as a culture tube or sample tube, is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top, usually with a rounded U-shaped bottom.
A large test tube specifically for boiling liquids is called a boiling tube.
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