Beschreibung
DURAN® flat flange bell jar with opening in the neck is precision laboratory glassware for experiments under vacuum. It features a standard ground joint NS 34/35 and a diameter of 315 mm, providing a tight seal via the ground joint while the neck opening allows connection of additional apparatus. Although many trials run at atmospheric pressure, operation under reduced pressure can markedly influence reaction pathways. To examine such effects in the coarse and fine vacuum range, a vacuum experiment plate is combined with a flat flange bell jar (also called an air-pump bell). Made from borosilicate glass 3.3 by manufacturer Duran/DWK Life Sciences, the vessel carries a permanently fired white print for durable identification. Supplied as one piece with a net weight of 9,3 kg and gross weight of 9,83 kg, it is intended for vacuum applications and work in underpressure chambers where controlled conditions below ambient pressure are required.
This article is part of Reaction vessels & jacketed vessels, in Beakers & flasks.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Material: Borosilicate glass 3.3
- Joint size: NS 34/35
- Diameter: 315 mm
- EAN: 4032051030688
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Questions about DURAN® Bell Jar, with aperture in neck
What is this article?
DURAN® Bell Jar, with aperture in neck is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in Reaction vessels & jacketed vessels, inside Beakers & flasks, in Laborbedarf.
A reaction vessel is the flask a synthesis actually runs in, sometimes jacketed so a fluid can heat or cool the wall. The joints, the working volume and the jacket connections are the specification. It is not a storage bottle.
A beaker is an open working vessel: easy to pour, poor as a measure. An Erlenmeyer flask has a flat base and a conical wall so a liquid can be swirled without climbing out. A round-bottom flask is for heating under a condenser, because the heat meets a curved wall and the joint at the neck connects to the rest of the glassware. Borosilicate is the glass that survives the temperature change. These forms are listed under ISO laboratory glassware.
Which category should I open next?
The category is Beakers & flasks. The sub-category is Reaction vessels & jacketed vessels. The catalogue is Laborbedarf.
Shelves beside this one are Round-bottom flasks, Beakers, Erlenmeyer flasks, Flat-bottom flasks, Flasks (other) and Beaker & flask accessories.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

