Description
Round-bottom flask, narrow neck, 500 ml, DURAN® is a single-neck laboratory flask for heating, distillation, reaction and receiving work where a spherical body and controlled neck access are required. Made from borosilicate glass 3.3 under the DURAN® trademark, it combines thermal shock resistance with broad chemical durability for everyday analytical and preparative use. The vessel has a nominal volume of 0,5 l, an outer diameter of 105 mm and an overall height of 168 mm; the narrow neck measures 34 mm outer diameter and is finished with a beaded rim for secure stopper or tubing connection. Offered in packs of 10 pieces from manufacturer Witeg, this Enghals round-bottom flask fits heating mantles, oil baths and standard distillation trains. The spherical geometry supports even heat distribution and efficient magnetic stirring, while the single narrow neck keeps assemblies compact and easy to seal. Suitable for research, quality-control and teaching laboratories that depend on classic DURAN® dimensions and reliable borosilicate performance in routine glassware setups.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 10 pc(s)
- Nominal volume: 0,5 l
- Material: Borosilicate glass 3.3
- Neck type: Narrow neck
- Outer diameter: 105 mm
- Height: 168 mm
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Questions about Flask round bottom narrow neck 500 ml DURAN®
What is this article?
Flask round bottom narrow neck 500 ml DURAN® 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.