Description
Round-bottom flask, wide neck, 500 ml, DURAN® is a single-neck laboratory flask produced from borosilicate glass 3.3 for larger batch and process-support applications. It offers a nominal volume of 500 ml together with a wide neck and beaded rim that facilitate rapid filling, emptying and thorough cleaning. Neck outer diameter is 50 mm, body outer diameter 105 mm and overall height 168 mm, providing ample capacity while remaining practical on the bench or in a heating bath. The spherical base assists uniform heat transfer during concentration, digestion or gentle boiling. Delivered in packs of 10 pieces, this DURAN® glassware from manufacturer Witeg supports reaction, distillation and receiving tasks across research, production support and teaching environments. Borosilicate glass 3.3 supplies the chemical durability and thermal performance required of quality laboratory glass. Transparent walls allow continuous monitoring of volume, colour and phase separation. The wide-neck design is particularly helpful when bulky solids, large funnels or stirring devices must enter the flask without restriction. Net weight is 0,16 kg per flask, offering a solid yet manageable vessel for clamped or free-standing use.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 10 pc(s)
- Brand: DURAN®
- Nominal volume: 500 ml
- Material: Borosilicate glass 3.3
- Neck type: Wide neck, beaded rim, 1 neck
- Dimensions: neck A.Ø 50 mm, A.Ø 105 mm, height 168 mm
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Questions about Flasks, round bottom, wide neck, 500 ml,
What is this article?
Flasks, round bottom, wide neck, 500 ml, is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Ballons à fond rond, inside Béchers & fioles, in Matériel de laboratoire.
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 Béchers & fioles. The sub-category is Ballons à fond rond. The catalogue is Matériel de laboratoire.
Shelves beside this one are Béchers, Fioles Erlenmeyer, Récipients de réaction & récipients à double enveloppe, Fioles à fond plat, Fioles (autres) and Accessoires pour béchers & fioles.
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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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
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.