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  2. Injector pen - Wikipedia

    en.wikipedia.org/wiki/Injector_pen

    Today, pen needles are manufactured at shorter needle lengths than required for typical vial and syringe administration, which decreases the pain associated with injection. [2] They are available in multiple lengths and gauge of needle , including 3.5mm, 4mm, 5mm, and 8mm lengths, and 31 through 34 gauge. [ 8 ]

  3. Inoculation needle - Wikipedia

    en.wikipedia.org/wiki/Inoculation_needle

    Sterilization of an inoculation needle via alcohol burner. The inoculation needle is sterilized using the aseptic technique. [1] [2] [3] [7] An open flame from an incinerator, a bunsen burner, or an alcohol burner is used to flame along the tip and the length of the needle that is to be in contact with the inoculum (or the propagule).

  4. Birmingham gauge - Wikipedia

    en.wikipedia.org/wiki/Birmingham_gauge

    The Birmingham gauge ranges from 5/0 or 00000, the lowest gauge number corresponding to the largest size of 0.500 inches (12.7 mm), to 36, the highest gauge number corresponding to the smallest size of 0.004 inches (0.10 mm).

  5. 3,3,4,4-Tetramethyltetrahydrofuran - Wikipedia

    en.wikipedia.org/wiki/3,3,4,4-Tetramethyltetra...

    In chemistry, 3,3,4,4-tetramethyltetrahydrofuran or 3,3,4,4-tetramethyloxolane is a heterocyclic compound with the formula C 8 H 16 O, or (CH 3) 2 ((CH 2)C 2(CH 2) O)(CH 3) 2.It can be seen as derivative of tetrahydrofuran (oxolane) with two methyl groups replacing two hydrogen atoms on each of the carbon atoms in the ring that are not adjacent to the oxygen.

  6. Bifurcated needle - Wikipedia

    en.wikipedia.org/wiki/Bifurcated_needle

    The punctures should remain in an area approximately 5 mm in diameter. The needle is then disposed of. When done correctly a trace of blood appears at the vaccination site within 10 to 20 seconds after the procedure. [3] [4] The bifurcated needle was created as a more efficient and cost effective alternative to the jet injector previously in use.

  7. Tuohy needle - Wikipedia

    en.wikipedia.org/wiki/Tuohy_needle

    Types of epidural needles include: [3] The Crawford Needle; The Tuohy Needle; The Hustead Needle; The Weiss Needle; The Sprotte Spezial Needle; Other Epidural Needles : Other less popular types are the Wagner needle (1957), the Cheng needle(1958), the Crawley needle (1968), the Foldes needle (1973), and the Bell needle (1975)—all variants of the Huber design with a blunted tip of varying ...

  8. Sewing machine needle - Wikipedia

    en.wikipedia.org/wiki/Sewing_machine_needle

    Most sewing machine needles will have packaging that gives both of these numbers in its size description — (e.g. as either 100/16 or 16/100). The length of all sewing machine needles has been standardized and does not require a separate code. The metric designation is the actual needle diameter in hundredths of a millimeter. [3]

  9. Nanoneedle - Wikipedia

    en.wikipedia.org/wiki/Nanoneedle

    With a length of 3-4 micrometres, they taper to tips of 2-5 nm across. In addition to optoelectronic devices, the needles will be useful in atomic force microscopy (AFM), and can be easily grown in arrays. Such AFM arrays, besides producing near-atomic resolution images of surfaces, could lead to new forms of data storage by direct manipulation ...

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