DURAN® Bell Jar, with glass knob top

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  • Manufactured from borosilicate glass 3.3
  • The button makes it easy to raise the bell jar
  • 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) Quantity
2446059 185 250 50 1
2446066 260 255 50 1
2446069 315 300 50 1