Filtering Flask, 250 mL, 12/pk

The Filtering Flask, also known as a side-arm flask, vacuum flask, or Büchner Flask, is designed with a barbed “bolt neck” extending from the side of the vessel. With thicker walls than a standard Erlenmeyer Flask, the Filtering Flask can stand up to strong internal pressure when used in conjunction with a vacuum pump. Each piece of glassware is made of borosilicate glass and features a flat bottom and a heavy-duty rim for use with a Büchner funnel. They are clearly marked with durable white enamel for improved visibility. The 250 mL Filtering Flask is a budget-friendly piece of equipment that will offer good quality and reliable performance in your lab for years to come.