Description
Round-bottom flask, wide neck, 4000 ml, DURAN® is a large single-neck laboratory flask for preparative heating, distillation, reaction and collection work where high working volume and open access are essential. Fabricated from borosilicate glass 3.3 under the DURAN® registered trademark, it delivers the thermal shock resistance and chemical durability expected of quality laboratory glassware. The flask features a wide neck with beaded rim, neck outer diameter 76 mm, outer diameter 206 mm and height 290 mm, allowing secure placement in suitable supports, heating equipment and clamps. Nominal volume is 4 l, making it appropriate for larger solvent batches, intermediate storage and receiving duties. This wide-neck round-bottom flask from manufacturer Witeg is aimed at research laboratories, pilot-scale setups and industrial environments that rely on robust DURAN® glassware. The generous neck opening facilitates charging of solids or viscous materials and thorough cleaning between runs. Pack size is 1 piece, matching the vessel’s size and typical single-station use in distillation, receiving and general round-bottom flask applications.
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
- Neck type: Wide neck
- Neck outer diameter: 76 mm
- Outer diameter: 206 mm
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Questions about Flasks, round bottom, wide neck, 4000 ml
What is this article?
Flasks, round bottom, wide neck, 4000 ml 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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.