Description
Round-bottom flask narrow neck 4000 ml DURAN® is a large single-neck laboratory flask intended for heating, distillation, reaction and collection tasks at multi-litre scale. It offers a nominal volume of 4 l, with an outer body diameter of 207 mm, an overall height of 290 mm and a narrow neck of 52 mm outer diameter completed by a beaded rim for reliable handling and sealing. Constructed from borosilicate glass 3.3 bearing the DURAN® mark, the flask delivers the thermal and chemical resistance required for demanding wet-chemistry workflows, solvent recovery and preparative distillation. The enghals configuration supports controlled vapour paths and compatibility with standard stoppers and adapters. Available as one piece from manufacturer Witeg, this 4000 ml round-bottom flask is suited to heating-mantle work, distillation trains and receiving applications that call for a robust DURAN® glass vessel with clearly specified dimensions. Net weight is 0,884 kg for stable placement in laboratory supports.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 4 l
- Material: Borosilicate glass 3.3
- Brand: DURAN®
- Neck type: Narrow neck (Enghals)
- Outer diameter: 207 mm
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Questions about Flasks, round bottom, narrow neck, 4000
What is this article?
Flasks, round bottom, narrow neck, 4000 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Round-bottom flasks, inside Beakers & flasks, in Labware.
A round-bottom flask is the heating flask of a distillation or a reflux. The curved wall takes the heat, and the ground neck connects to a still head or a condenser. The joint size, not only the volume, has to match the rest of the set.
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 Round-bottom flasks. The catalogue is Labware.
Shelves beside this one are Beakers, Erlenmeyer flasks, Reaction vessels & jacketed vessels, 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.
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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.