Description
Round-bottom flask narrow neck 20000 ml DURAN® is a large-capacity laboratory vessel in borosilicate glass 3.3 for distillation, collection and general reaction work. With a nominal volume of 20 l and a single narrow neck, the flask combines a spacious round bottom for even heating and mixing with a beaded rim that supports secure stopper or adapter seating. Dimensional data include a neck outer diameter of 76 mm, an outer diameter of 345 mm and a height of 515 mm, giving a stable geometry suited to pilot-scale and high-volume laboratory setups. The DURAN® glass construction from manufacturer Witeg provides the thermal shock resistance and chemical durability expected of borosilicate 3.3 laboratory glassware. Typical applications span organic synthesis, solvent recovery, receiving duties and other workflows where a large Enghals round-bottom flask is required. Supplied as 1 pc with a net weight of 3,936 kg, this flask fits standard laboratory supports and heating equipment used with large round-bottom vessels in research and production environments.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 20 l
- Material: Borosilicate glass 3.3
- Neck type: Narrow neck
- Neck outer diameter: 76 mm
- Outer diameter: 345 mm
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Questions about Flasks, round bottom, narrow neck, 20000
What is this article?
Flasks, round bottom, narrow neck, 20000 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.