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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. Tube (fluid conveyance) - Wikipedia

    en.wikipedia.org/wiki/Tube_(fluid_conveyance)

    A tube, or tubing, is a long hollow cylinder used for moving fluids (liquids or gases) or to protect electrical or optical cables and wires. The terms " pipe " and "tube" are almost interchangeable, although minor distinctions exist — generally, a tube has tighter engineering requirements than a pipe.

  4. Laboratory sample tube - Wikipedia

    en.wikipedia.org/wiki/Laboratory_sample_tube

    Laboratory sample tubes are used to hold small quantities of substances undergoing experimentation or testing. 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 ...

  5. Pipe (fluid conveyance) - Wikipedia

    en.wikipedia.org/wiki/Pipe_(fluid_conveyance)

    For example, NPS 14 has an OD of 14 inches or 355.60 millimetres, and is equivalent to DN 350. Since the outside diameter is fixed for a given pipe size, the inside diameter will vary depending on the wall thickness of the pipe. For example, 2" Schedule 80 pipe has thicker walls and therefore a smaller inside diameter than 2" Schedule 40 pipe.

  6. Meniscus (liquid) - Wikipedia

    en.wikipedia.org/wiki/Meniscus_(liquid)

    When a tube of a narrow bore, often called a capillary tube, is dipped into a liquid and the liquid wets the tube (with zero contact angle), the liquid surface inside the tube forms a concave meniscus, which is a virtually spherical surface having the same radius, r, as the inside of the tube. The tube experiences a downward force of magnitude ...

  7. Tubing - Wikipedia

    en.wikipedia.org/wiki/Tubing

    Tubing may refer to: Tube (fluid conveyance), a long hollow cylinder used for moving fluids or to protect cables and wires; Pipe (fluid conveyance), a tubular section used to convey substances that can flow; Piping, a system of pipes used to convey fluids; Plumbing, any system that conveys fluids for a wide range of applications

  8. Capillary pressure - Wikipedia

    en.wikipedia.org/wiki/Capillary_pressure

    In fluid statics, capillary pressure is the pressure between two immiscible fluids in a thin tube (see capillary action), resulting from the interactions of forces between the fluids and solid walls of the tube. Capillary pressure can serve as both an opposing or driving force for fluid transport and is a significant property for research and ...

  9. Thistle tube - Wikipedia

    en.wikipedia.org/wiki/Thistle_tube

    A thistle tube is a piece of laboratory glassware consisting of a shaft of tube, with a reservoir and funnel-like section at the top. Thistle tubes are typically used by chemists to add liquid to an existing system or apparatus. Thistle funnels are used to add small volumes of liquids to an exact position.