Description
Round-bottom flask 250 ml with three necks is a multi-port laboratory vessel designed for distillation, synthesis and reflux work. It features a centre neck with ground joint NS 29/32 and two straight side necks NS 19/26, giving flexible access for condensers, dropping funnels, thermometers or stirring assemblies. The flask is made from clear borosilicate glass 3.3, which provides strong chemical resistance and thermal stability under typical heating-mantle and oil-bath conditions. With a nominal volume of 250 ml (0,25 l) and a net weight of 0,132 kg, the vessel suits organic preparations, sample collection and multi-component reaction setups where simultaneous connections are required. The straight side-neck geometry keeps the footprint compact on the bench while still allowing convenient reagent addition and sampling. Supplied from manufacturer Witeg, this clear-glass round-bottom flask is intended for use as a distillation flask, receiving flask or general ground-joint reaction flask in research and routine laboratory workflows that demand reliable joint compatibility and visual monitoring of the contents throughout the process.
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: 250 ml
- Material: Borosilicate glass 3.3
- Number of necks: 3
- Centre neck: NS 29/32
- Side necks: 2 × NS 19/26 straight
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Questions about Round bottom flask 250 ml three necks CN ST 29/32
What is this article?
Round bottom flask 250 ml three 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.