Distilling Flask with Sidearm, 250 mL

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: ~8.7 cm, Height: ~23.7 cm
• Neck inside diameter is 20-30 mm, use a No. 6.5 stopper
• Sidearm outside diameter is 8-9 mm, use 5/16" or 8 mm ID rubber tubing
• Sidearm length is about 10-14 cm