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  2. Babcock bottle - Wikipedia

    en.wikipedia.org/wiki/Babcock_bottle

    Warm water would be poured down between the two tubes, seep under the inner tube, and lift the fat into the latter. [13] However, there seems to be no evidence that this invention has ever been marketed or used. A variant of the Babcock bottle has a glass tube parallel to the neck, that crosses the wall of the body and ends just above its bottom.

  3. Test tube - Wikipedia

    en.wikipedia.org/wiki/Test_tube

    These tubes are commonly sealed with a rubber stopper and often have a specific additive placed in the tube with the stopper color indicating the additive. For example, a blue-top tube is a 5 ml test tube containing sodium citrate as an anticoagulant, used to collect blood for coagulation and glucose-6-phosphate dehydrogenase testing. [5]

  4. Volumetric flask - Wikipedia

    en.wikipedia.org/wiki/Volumetric_flask

    These flasks are usually pear-shaped, with a flat bottom, and made of glass or plastic. The flask's mouth is either furnished with a plastic snap/screw cap or fitted with a joint to accommodate a PTFE or glass stopper. The neck of volumetric flasks is elongated and narrow with an etched ring graduation marking. The marking indicates the volume ...

  5. Vacutainer - Wikipedia

    en.wikipedia.org/wiki/Vacutainer

    A range of Vacutainer tubes containing blood. A vacutainer blood collection tube is a sterile glass or plastic test tube with a colored rubber stopper creating a vacuum seal inside of the tube, facilitating the drawing of a predetermined volume of liquid. Vacutainer tubes may contain additives designed to stabilize and preserve the specimen ...

  6. Laboratory rubber stopper - Wikipedia

    en.wikipedia.org/wiki/Laboratory_rubber_stopper

    A laboratory rubber stopper or a rubber bung or a rubber cork is mainly used in chemical laboratories in combination with flasks and test tube and also for fermentation in winery. [ 1 ] [ 2 ] [ 3 ] Generally, in a laboratory , the sizes of rubber stoppers can be varied up to approximately 16 sizes and each of it is specific to certain type of ...

  7. Burette - Wikipedia

    en.wikipedia.org/wiki/Burette

    It is a long, graduated glass tube, with a stopcock at its lower end and a tapered capillary tube at the stopcock's outlet. The flow of liquid from the tube to the burette tip is controlled by the stopcock valve. There are two main types of burette; the volumetric burette and the piston burette. A volumetric burette delivers measured volumes of ...

  8. Column: A Trump judge just overturned the government's most ...

    www.aol.com/news/column-trump-judge-just...

    Since 1986, whistleblowers have been in the forefront of the government's war on fraud, accounting for $53 billion, or more than 70%, of the $75 billion recovered from swindlers on defense ...

  9. Dropping funnel - Wikipedia

    en.wikipedia.org/wiki/Dropping_funnel

    cylindrical type graduated and ungraduated with cone and socket; with pressure equalizing tube; pear shaped, graduated and ungraduated; Pressure-equalizing dropping funnels have an additional narrow-bore glass tube from the bulb of the funnel, to the ground glass joint around the stem. These replace the liquid volume lost in the bulb with the ...