Description
Round-bottom flask, narrow neck, 6000 ml, DURAN® is a large-capacity single-neck flask intended for distillation, collection and preparative laboratory work that demands a substantial working volume. Fabricated from DURAN® borosilicate glass 3.3, the vessel offers a nominal volume of 6 l, an outer flask diameter of 236 mm, an overall height of 355 mm and a narrow neck with an outer diameter of 51 mm. The neck is finished with a beaded rim to aid handling, clamping and coupling to common laboratory connectors. Its single-neck layout keeps the profile clear for heating baths, rotary setups or static recovery of solvents and reaction products. Offered as one piece from manufacturer Witeg, the flask has a net weight of 1,371 kg and is well matched to organic synthesis, solvent work-up and general wet-chemistry tasks where DURAN® glass and a defined narrow-neck geometry are preferred. Clear dimensional data and the established DURAN® material specification support consistent selection of this 6000 ml round-bottom flask for demanding laboratory environments that require durable, large-volume glassware.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 6 l
- Material: Borosilicate glass 3.3
- Brand: DURAN®
- Neck type: Narrow neck
- Flask outer diameter: 236 mm
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Questions about Flasks, round bottom, narrow neck, 6000
What is this article?
Flasks, round bottom, narrow neck, 6000 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.

