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Format Physical Object Remove constraint Format: Physical Object Subject Test tubes Remove constraint Subject: Test tubes

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  1. Wooden apparatus for holding ten test tubes upright.

  2. Wooden apparatus for holding six test tubes upright.

  3. Wooden apparatus for holding twelve test tubes upright.

  4. Wooden apparatus for holding five test tubes upright.

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

  6. Wooden apparatus for holding ten test tubes upright.