Description
DURAN® round-bottom flask with wide neck and beaded rim is a versatile laboratory vessel manufactured from borosilicate glass 3.3 and offering a nominal volume of 5 l. Bulbous flasks of this type serve as universal laboratory containers alongside beakers and are routinely employed for distillations as well as for heating liquids. The wide neck design facilitates straightforward filling and cleaning, while the rounded geometry supports highly uniform heat distribution during use. A white printed scale is permanently fired into the glass surface for long-lasting readability. This single-neck flask is well suited for operation in heating mantles, general heating procedures and the mixing of multiple components. Supplied as a single piece with a net weight of 1,25 kg, the item belongs to the DURAN® range from manufacturer Duran/DWK Life Sciences. Larger sizes including 5 l are not produced according to DIN EN ISO. Laboratory users select the appropriate flask configuration—narrow or wide neck, with or without ground joints, round- or flat-bottom—according to the specific process requirements of distillation, reaction or sample preparation work.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Nominal volume: 5 l
- Material: Borosilicate glass 3.3
- Neck type: Wide neck
- EAN: 4032051013759
- Technical Information Sheet:
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Questions about DURAN® Round Bottom Flask Wide neck, with beaded rim
What is this article?
DURAN® Round Bottom Flask Wide neck, with beaded rim is the article on this page. Luminix Health distributes DWK Life Sciences 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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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.