Description
Receiving flask according to Schlenk, cylindrical, 300 ml with NS 14/23 joint is a specialised laboratory vessel for distillation and Schlenk-line work. This round-bottom flask incorporates a lateral stopcock fitted with a hollow plug and glass handle, a 2,5 mm bore and an NS 14,5 connection complete with an 8 mm olive for secure tubing attachment. Overall dimensions are 230 × 50 mm, giving a compact cylindrical profile suited to collection of distillates and handling of air- or moisture-sensitive materials under controlled atmosphere. The NS 14/23 ground joint ensures straightforward compatibility with standard laboratory glassware assemblies. Offered as a single piece from manufacturer Witeg, the flask supports organic synthesis, vacuum distillation and inert-gas techniques where reliable isolation and transfer via the side-arm stopcock are required. Its cylindrical round-bottom geometry aids even heating and efficient drainage, making it a practical choice for preparative and research laboratories performing Schlenk operations.
This article belongs on Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Capacity: 300 ml
- Ground joint: NS 14/23
- Bottom: Round bottom, cylindrical
- Stopcock bore: 2,5 mm
- Olive: 8 mm
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Questions about Collecting flask clylindrical 300 ml ST14
What is this article?
Collecting flask clylindrical 300 ml ST14 is the article on this page. Luminix Health distributes Witeg 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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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.

