Description
Round-bottom flask 2000 ml three necks with centre neck NS 45/40 and two angled side necks NS 19/26 is multi-neck laboratory glassware for reaction, distillation and synthesis work. The flask is made from borosilicate glass 3.3 as clear glass, combining chemical resistance with good thermal-shock performance. Its nominal volume of 2 l suits medium-scale preparations. The vertical centre neck carries a standard ground joint NS 45/40, while the two side necks are inclined at 20° and finished with NS 19/26 joints, enabling simultaneous attachment of condensers, dropping funnels, thermometers or gas inlets. This configuration from manufacturer Witeg is widely used in organic synthesis, solvent recovery and multi-component reactions that require controlled addition and monitoring. The round-bottom shape promotes uniform heating and efficient stirring on heating mantles or oil baths. Clear borosilicate construction allows continuous visual observation of the contents. Supplied as a single piece, the flask supports flexible experimental set-ups in research, teaching and process laboratories.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc(s)
- Nominal volume: 2 l
- Number of necks: 3
- Centre neck: NS 45/40
- Side necks: NS 19/26 angled 20°
- Material: Borosilicate glass 3.3
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Round bottom flask 2000 ml three necks CN ST 45/40
What is this article?
Round bottom flask 2000 ml three necks CN ST 45/40 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.
How does ordering and shipping work?
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.