It is a device, made with nylon bristles attached to a twisted-wire shaft, used to knock the bottoms out of test tubes. Or at least it was when I was in high school chem class.
http://wiki.answers.com/Q/What_a_test_tube_brush_and_ho...
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The triangle is used to support a crucible on the iron ring during heating. ... Droppers are used to deliver drops of a liquid. ... The stirring rod is used to mix or stir substances in a beaker or test tube.
learn.sdstate.edu/deb_pravecek/chem106l/Chem106L/wire_g... learn.sdstate.edu/deb_pravecek/chem106l/Chem106L/wire_gauze.htm
Discount Science. Test Tube Brush by Wild Goose Company ... This is a Test Tube Brush made by The Wild Goose Company. It's for ages 8 and over. ... Besides, dirty equipment can be dangerous as well as ruin an experiment. This test tube brush will do great things on dirty items but it won't work by itself.
www.hobbylinc.com/htm/wgs/wgs16200.htm
This test tube brush is 7.25 inches long. The brushes are 3 inches long by 1/2 inches in diameter. Twisted wire handle with hanging loop. ... The test tube brush is used to easily clean the inside of a test tube.
secure.sciencecompany.com/Test-Tube-Brush-P6284C642.asp... secure.sciencecompany.com/Test-Tube-Brush-P6284C642.aspx
core.ecu.edu/chem/chemlab/equipment/etestbrush.htm core.ecu.edu/chem/chemlab/equipment/etestbrush.htm
Equipment: Test Tube Holder ... The test tube holder is the holder made out of wire in your lab drawer. You hold it in your hand and squeeze on the handles to open the other end, into which you then insert a test tube. This small piece of equipment does nothing except hold test tubes.
orgchem.colorado.edu/equipment/equip/ttholder.html
The following C&A Scientific Test Tube Brush is for cleaning small-diameter tubes. ... My Account/Order Status ... New Lab Supplies...
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Home > Freezing > Test Tube Brush ... The Test Tube Brush is used to clean lab ware. Each package contains 12 test tube brushes. ... Test Tube Brush (12/Pkg)
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