Description
Round-bottom flask 500 ml with two necks is a laboratory glass vessel intended for distillation, reaction and collection work. It combines a centre neck with standard ground joint NS 24/29 and a side neck angled at 20° with NS 14/23, enabling simultaneous connection of condensers, adapters or other ground-joint components. The flask is made from clear borosilicate glass 3.3 and offers a nominal volume of 500 ml. This two-neck design from manufacturer Witeg provides practical working geometry for multi-neck assemblies while the round bottom supports even heating on mantles or baths. With a net weight of 0,192 kg, the clear glass construction permits continuous visual observation of contents and process progress. Suitable for use as a distillation flask or receiving flask within standard ground-joint apparatus, the item is supplied as a single piece and integrates directly into existing laboratory glassware sets for synthetic and preparative procedures.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 500 ml
- Material: Borosilicate glass 3.3
- Glass type: Clear glass
- Centre neck: NS 24/29
- Side neck: NS 14/23, angled 20°
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Questions about Round bottom flask 500 ml two necks CN ST 24/29 +
What is this article?
Round bottom flask 500 ml two necks CN ST 24/29 + is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Round-bottom flasks, inside Beakers & flasks, 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 Beakers & flasks. The sub-category is Round-bottom flasks. The catalogue is Matériel de laboratoire.
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.