Glass Test Tubes

Glass Test Tubes

Glass round bottom test tubes are packaged for your convenience in easy-to-open, easy-to-use bulk packs. They are made of borosilicate glass to reduce pH changes and contaminants potentially leached from soda-lime glass.

Product Description

A test tubes is a common piece of laboratory glassware consisting of a finger-like length of glass, open at the top, usually with a rounded U-shaped bottom.

Test tubes are available in a multitude of lengths and widths, typically from 10 to 20 mm wide and 50 to 200 mm long. The top often features a flared lip to aid pouring out the contents; some sources consider that the presence of a lip is what distinguishes a test tube from a culture tube.

A test tube has either a flat bottom, a round bottom, or a conical bottom. Some test tubes are made to accept a ground glass stopper or a screw cap. They are often provided with a small ground glass or white glaze area near the top for labeling with a pencil.

Product Features:

  • Round bottom
  • Smooth top and bottom to prevent cuts


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