Description
Round-bottom flask 250 ml with three necks is a clear laboratory vessel featuring a centre neck NS 24/29 and two side necks NS 14/23 angled at 20°. Fabricated from borosilicate glass 3.3, it provides thermal shock resistance and chemical durability for distillation, reflux and multi-port synthesis. The 250 ml (0,25 l) nominal volume is suited to medium-scale preparative work where condenser, addition funnel and temperature probe must be connected simultaneously. The round bottom supports uniform heating on mantles or baths and aids mixing. This three-neck flask from manufacturer Witeg is part of the standard ground-joint range used as distillation, receiver or reaction flasks. Net weight is 0,13 kg. Supplied as a single piece, it couples directly to common NS glassware and serves organic chemistry and general laboratory applications that require a robust multi-neck borosilicate flask of intermediate capacity.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 250 ml
- Number of necks: 3
- Centre neck: NS 24/29
- Side necks: NS 14/23 angled 20°
- EAN: 4046681071577
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Questions about Round bottom flask 250 ml three necks CN ST 24/29
What is this article?
Round bottom flask 250 ml three 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 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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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.