Description
3-Neck flask 250 ml with centre neck socket NS 14,5/23 and two straight side neck sockets NS 14,5/23 is a multi-neck round-bottom flask designed for laboratory synthesis, distillation and reaction work. Fabricated from borosilicate glass 3.3, it provides high mechanical strength together with excellent chemical and thermal resistance. The three ground-glass joints of NS 14,5/23 size accept standard laboratory components such as condensers, dropping funnels, stirrers or thermometers. This flask from manufacturer Rettberg is particularly useful when simultaneous reagent addition, agitation and temperature monitoring are required. With a nominal volume of 250 ml and a net weight of 0,125 kg, the vessel is supplied as a single piece ready for immediate assembly into compact apparatus. The straight side necks facilitate space-efficient setups, while the centre neck serves as the primary access point. Ideal for organic chemistry, preparative work and teaching laboratories, the flask supports reliable performance under everyday laboratory conditions.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Product type: Laboratory vessel
- Nominal volume: 250 ml
- Number of necks: 3
- Joint size: NS 14,5/23
- Neck configuration: Centre neck + 2 straight side necks
- Technical Information Sheet:
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Questions about 3-neck bottom flask, 250 ml, middle neck socket size 14,5/23,
What is this article?
3-neck bottom flask, 250 ml, middle neck socket size 14,5/23, is the article on this page. Luminix Health distributes Rettberg 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.