DURAN® Bell Jar, with aperture in neck

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  • Manufactured from borosilicate glass 3.3
  • Tight closure due to standard ground joint
  • Top opening allows connection of additional equipment
  • Fired-on, highly durable white ceramic

Product Overview

By default, tests are carried out at normal pressure. The conduct of tests under vacuum (negative pressure) can have significant effects on the reaction sequence. In order to be able to observe these effects in the rough and fine vacuum range, a vacuum experiment plate and a bell jar (also called air pump bell) are required.


Catalog No Diameter d (mm) Height h (mm) Height h1 (mm) Nominal Size (NS) Quantity
2446559 185 250 50 34/35 1
2446561 215 300 50 34/35 1
2446569 315 500 50 34/35 1