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Preserving and Displaying Insect Specimens in Hand Sanitizer - The Video

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  • Sam Droege
    All: Below is our latest video: http://www.youtube.com/watch?list=UUhOIN76lBgxZ-BIIo8MvzHA&v=izqFaia_8bU&feature=player_detailpage This is a distillation of
    Message 1 of 1 , May 4, 2012
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      All:


      Below is our latest video:

      http://www.youtube.com/watch?list=UUhOIN76lBgxZ-BIIo8MvzHA&v=izqFaia_8bU&feature=player_detailpage

      This is a distillation of our work this past year on working with insect and invertebrate specimens in hand sanitizer, this technique is based on this slide share

      http://www.slideshare.net/sdroege/how-preserve-insect-specimens-in-hand-sanitizer

      In sum:  

      You can display and look at under the microscope insect specimens by putting them in a hand sanitizer filled cuvette.  Great for showing the public insect specimens and letting them handle the specimens safely and also good for certain types of microscopic work.

      What is a cuvette?... Here is what Wikipedia says

      A cuvette is a small tube of circular or square cross section, sealed at one end, made of plastic, glass, or fused quartz (for UV light) and designed to hold samples for spectroscopic experiments. The best cuvettes are as clear as possible, without impurities that might affect a spectroscopic reading. Like a test tube, a cuvette may be open to the atmosphere on top or have a cap to seal it shut. Parafilm can also be used to seal it.

      Inexpensive cuvettes are round and look similar to test tubes. Disposable plastic cuvettes are often used in fast spectroscopic assays, where speed is more important than high accuracy.

      Some cuvettes will be clear only on opposite sides, so that they pass a single beam of light through that pair of sides; often the unclear sides have ridges or are rough to allow easy handling. Cuvettes to be used in fluorescence spectroscopy[1] must be clear on all four sides because fluorescence is measured at a right-angle to the beam path to limit contributions from beam itself. Some cuvettes, known as tandem cuvettes, have a glass barrier that extends 2/3 up inside, so that measurements can be taken with two solutions separated, and again when they are mixed. Typically, cuvettes are 1 cm (0.39 in) across, to allow for easy calculations of coefficients of absorption.

      The technique is useful for very small specimen inspections under the scope and for displaying larger specimens.  

      sam

      Sam Droege  sdroege@...                     
      w 301-497-5840 h 301-390-7759 fax 301-497-5624
      USGS Patuxent Wildlife Research Center
      BARC-EAST, BLDG 308, RM 124 10300 Balt. Ave., Beltsville, MD  20705
      Http://www.pwrc.usgs.gov
                                            
      I taste a liquor never brewed,
      From tankards scooped in pearl;
      Not all the vats upon the Rhine
      Yield such an alcohol!


      Inebriate of air am I,
      And debauchee of dew,
      Reeling, through endless summer days,
      From inns of molten blue.


      When landlords turn the drunken bee
      Out of the foxglove's door,
      When butterflies renounce their drams,
      I shall but drink the more!


      Till seraphs swing their snowy hats,
      And saints to windows run,
      To see the little tippler
      Leaning against the sun!
         

        - Emily Dickinson

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