Description
Round-bottom flask narrow neck 2000 ml DURAN® is a single-neck laboratory flask fabricated from borosilicate glass 3.3 for larger-scale chemical preparations, distillation and receiving duties. It provides a nominal volume of 2 l, a narrow neck with beaded rim, a neck outer diameter of 42 mm, a body outer diameter of 166 mm and an overall height of 250 mm. DURAN® glass delivers the thermal shock resistance and chemical durability characteristic of borosilicate 3.3 under repeated heating and solvent exposure. The enghals design facilitates secure closure and connection to standard apparatus, while the round bottom promotes even heat transfer across the larger charge volume. Available from manufacturer Witeg, the flask serves preparative chemistry, reflux and collection setups that require a robust 2000 ml round-bottom format. Packs of 10 pc(s) support laboratory stocking for teaching, research and process-support environments. Net weight is 0,472 kg per flask. The item belongs to round-bottom, ground-joint, distillation and receiving-flask categories used throughout everyday laboratory glassware assemblies.
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: 2 l
- Material: Borosilicate glass 3.3
- Neck type: Narrow neck
- Neck outer diameter: 42 mm
- Body outer diameter: 166 mm
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Questions about Flasks, round bottom, narrow neck, 2000
What is this article?
Flasks, round bottom, narrow neck, 2000 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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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.