Description
Round-bottom flask 2000 ml with two necks is a clear laboratory flask manufactured from borosilicate glass 3.3 for larger-scale distillation, reaction and collection work. It is equipped with a centre neck NS 29/32 and an angled side neck at 20° with NS 19/26 joint, enabling simultaneous connection of condensers, addition funnels or other apparatus while maintaining access through the main neck. The nominal volume is 2 l and the clear glass construction allows straightforward observation of contents and process status. Net weight is 0,555 kg, giving a robust yet manageable vessel for bench and pilot-scale organic chemistry, solvent work-up and multi-neck assemblies. This two-neck round-bottom flask from manufacturer Witeg is intended for heating, reflux and vacuum applications common in chemical and pharmaceutical laboratories when paired with matching ground joints and suitable supports. Defined joint sizes, the angled side neck and borosilicate glass 3.3 together support flexible, reliable glassware setups in research and production-support 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: 2 l
- Neck configuration: 2 necks
- Centre neck: NS 29/32
- Side neck: NS 19/26 angled 20°
- EAN: 4250317320162
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Questions about Round bottom flask 2000 ml two necks CN ST 29/32 +
What is this article?
Round bottom flask 2000 ml two necks CN ST 29/32 + 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.

