Round Bottom Flask

Round Bottom Flask

 

Set Up:

-         14 mm (or any large size) tubing

-         # 3 tip

-         Matches/mats/towel/glass cutter

-         Blow tube

 Round Bottom Flask (14 mm tubing):

-         Use a # 3 tip.

-         Make a test tube.

-         REMEMBER TO KEEP THE GLASS ROTATING TO PREVENT UNEVEN GLASS.

-          Heating the bottom of the test tube, collapse the glass to form a thick lens

-         Remove from the heat and blow a small bubble.

-         Heat again to create a thick walled flask.

-         Remove from the heat and blow a larger flask.

-         NOTE:  The flask should NOT exceed 2 x’s the thickness of the tubing.

-         The round bottom flask should be lens free, smooth, and bounce, when dropped from an outstretched, at arms-lengths.

If your flask survived the drop, which it should survive a few drops, you now have a C.

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