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Subject Test tubes Remove constraint Subject: Test tubes

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  1. Wooden apparatus for holding ten test tubes upright.

    • 1945

    Color print magazine advertisement for Woodall Industries, Inc. featuring an image of a glass test tube held over a Bunsen burner with a metal test tube holder.

  2. Rectangular wooden apparatus for holding fifteen test tubes upright. Heavy tape has been attached to all four sides.

  3. Wooden apparatus for holding five test tubes upright.

  4. Wooden apparatus for holding twelve test tubes upright.

  5. Wooden apparatus for holding six test tubes upright.

  6. Wooden apparatus for holding ten test tubes upright.