It is a brush that is long and narrow and used to clean the inside of glassware, in particular test tubes.
Test tube brush.
Test tube brush=use for cleaning test tubes
test tube brush
A thin, long brush called a 'test-tube brush'.
A test tube holder is used to hold a test tube when it is hot.testube holder is the tube that you test with a holder
Test tube brush.
test tube brush
Test Tube brushes are used to easily clean the test tubes .
Test Tube Brush
A test tube brush is a brush that cleans up your test tube when it is wet or messy.A test tube brush is used to easily clean the inside of a test tube.A test tube brush is a couple of wires spun together with bristles on one end in the shape of a test tube. They come in all different sizes and materials for all different size test tubes and uses.
The test tube holder, usually a rack, holds the test tube up right and stops it rolling around. The test tube brush is used to clean out residues
A test tube brush is a brush that cleans up your test tube when it is wet or messy.A test tube brush is used to easily clean the inside of a test tube.A test tube brush is a couple of wires spun together with bristles on one end in the shape of a test tube. They come in all different sizes and materials for all different size test tubes and uses.
Test tube brush
a brush that cleans the beaker and a brush that cleans a test tube.
Test tube brush=use for cleaning test tubes
Usually a test tube brush is used or if it is small, a pipe cleaner.
test tube brush