Description
Round-bottom flask 250 ml NS 14/23 is a clear laboratory flask intended for distillation, reaction and collection work. Made from borosilicate glass 3.3, it combines thermal shock resistance with chemical durability for everyday lab use. The vessel has a single centre neck with standard ground joint NS 14/23, an outer diameter of 85 mm and a height of 140 mm. Nominal volume is 0,25 l, giving a compact footprint for heating, reflux and receiving setups that require a smaller joint size. This round-bottom flask from manufacturer Witeg is supplied as a pack of 10 pieces and is suited to teaching, research and quality-control laboratories. Clear glass construction supports visual monitoring of contents and processes. Typical applications include use as a distillation flask, receiving flask or general ground-joint flask where standardised NS connections and reliable borosilicate 3.3 performance are needed.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 10 pc(s)
- Nominal volume: 0,25 l
- Joint size: NS 14/23
- Outer diameter: 85 mm
- Height: 140 mm
- Material: Borosilicate glass 3.3
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Questions about Round bottom flask 250 ml ST 14/23
What is this article?
Round bottom flask 250 ml ST 14/23 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.
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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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.