Description
Round-bottom flask 500 ml with two necks, centre neck NS 29/32 and straight side neck NS 19/26, is clear laboratory glassware manufactured from borosilicate glass 3.3. The nominal volume of 0,5 l suits larger preparations, distillations and receiving duties that rely on standard ground-joint connections. Dual necks allow concurrent attachment of condensers, addition funnels or other NS components, while the straight side neck maintains clear vapour flow and easy access. Offered as 1 pc with a net weight of 0,206 kg, the flask from manufacturer Witeg integrates into common laboratory joint setups for organic synthesis, solvent work-up and multi-step sequences. It is listed among round-bottom flasks, ground-joint flasks, distillation flasks and receiving flasks, underscoring its role in research, teaching and analytical laboratories. Borosilicate glass 3.3 delivers the chemical durability and thermal performance needed for repeated heating, cooling and reduced-pressure operations. Clear glass construction supports continuous visual observation of reaction mixtures, boiling behaviour and phase separation.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 0,5 l
- Material: Borosilicate glass 3.3
- Centre neck: NS 29/32
- Side neck: NS 19/26 straight
- Number of necks: 2
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Questions about Round bottom flask 500 ml two necks CN ST 29/32 +
What is this article?
Round bottom flask 500 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.