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  2. Test tube - Wikipedia

    en.wikipedia.org/wiki/Test_tube

    A boiling tube is a large test tube intended specifically for boiling liquids. A test tube filled with water and upturned into a water-filled beaker is often used to capture gases, e.g. in electrolysis demonstrations. A test tube with a stopper is often used for temporary storage of chemical or biological samples.

  3. Laboratory sample tube - Wikipedia

    en.wikipedia.org/wiki/Laboratory_sample_tube

    These tubes are usually made of glass, but can also be made of plastic or metal. They vary in size and purpose. Laboratory sample tubes must not be confused with glass tubing, which can be utilized to carry fluid between laboratory equipment. Example laboratory sample tubes are listed below: Ignition tube; Test tube; Boiling tube; NMR tube

  4. Glossary of language education terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_language...

    In English-speaking countries, they have integrative motivation, the desire to learn the language to fit into an English-language culture. They are more likely to want to integrate because they 1. Generally have more friends and family with English language skills. 2. Have immediate financial and economic incentives to learn English. 3.

  5. In vitro - Wikipedia

    en.wikipedia.org/wiki/In_vitro

    In vitro (meaning in glass, or in the glass) studies are performed with microorganisms, cells, or biological molecules outside their normal biological context. Colloquially called "test-tube experiments", these studies in biology and its subdisciplines are traditionally done in labware such as test tubes, flasks, Petri dishes, and microtiter ...

  6. Test tube holder - Wikipedia

    en.wikipedia.org/wiki/Test_tube_holder

    It is used for holding a test tube in place [2] when the tube is hot or should not be touched. [3] For example, a test tube holder can be used to hold a test tube while it is being heated. [4] Moreover, when heating the tube with liquid or solid contained inside, the holder ought to tightly hold a test tube [5] in order for the tube to be ...

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