Beschrijving
Schlenk flask 250 ml with socket NS 14,5/23 and lateral high-vacuum PTFE valve (fine thread) is a robust laboratory vessel for air- and moisture-sensitive chemistry under inert atmosphere or vacuum. Fabricated from borosilicate glass 3.3, it combines chemical resistance with the mechanical strength needed for repeated Schlenk-line use. The side-mounted high-vacuum PTFE valve incorporates a fine thread for precise control and offers a passage of 0–8 mm; the olive of Ø 9 mm ensures secure attachment of vacuum or inert-gas lines. Its 250 ml nominal volume is appropriate for larger-scale reactions, distillations and solvent transfers while remaining compatible with standard bench setups. The NS 14,5/23 ground-joint socket allows direct connection to common stoppers and glassware. This single-piece flask from manufacturer Rettberg has a net weight of 0,151 kg and belongs to the proven range of Schlenk apparatus employed in organometallic synthesis, catalysis research and related applications requiring rigorous exclusion of air.
This article belongs on Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc(s)
- Nominal volume: 250 ml
- Joint size: NS 14,5/23
- Material: Borosilicate glass 3.3
- Valve: Lateral high-vacuum PTFE valve (fine thread)
- Passage: 0–8 mm
- Technical Information Sheet:
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Questions about Nitrogen flask, 250 ml, socket size 14,5/23, PTFE high vacuum-valve
What is this article?
Nitrogen flask, 250 ml, socket size 14,5/23, PTFE high vacuum-valve is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Round-bottom flasks, inside Beakers & flasks, in Labmateriaal.
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.
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The category is Beakers & flasks. The sub-category is Round-bottom flasks. The catalogue is Labmateriaal.
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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