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Distilling Flask with Sidearm, 250 ml

Ages 14+
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Use this 250 ml distilling flask to perform simple distillations cost effectively. Read More

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Use this 250 ml distilling flask to perform simple distillations cost effectively. The long neck functions as a distillation column and the sidearm allows for connection to a condenser (with a properly cut rubber stopper) or just a coil of vinyl tubing through a water bath for condensing the vapor. The sidearm on this 250 ml distilling flask is located about 6 cm below the top of the neck and angles downward at a 75° angle. This allows for the bulb of a partial immersion thermometer, inserted through a rubber stopper in the neck, to be located right at the sidearm where the vapor is leaving the flask.

NOTE: Actual product may vary from the one pictured due to differences in suppliers.






250 ml Distilling Flask details:

  • Made from high-quality Boro 3.3 borosilicate glass
  • Low coefficient of thermal expansion means this glass is capable of withstanding thermal shock
  • 250 ml capacity
  • Diameter: 8.5 cm, Height: 21 cm
  • Neck inside diameter is 30 mm, use a No. 6.5 stopper
  • Sidearm outside diameter is 8 mm, use 5/16" or 8 mm ID rubber tubing
  • Sidearm length is about 10 cm
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