Description
Schlenk flask, 250 ml, socket NS 14,5/23 is a laboratory vessel made of borosilicate glass 3.3 for handling air-sensitive materials under inert atmosphere. It has a single neck with ground joint NS 14,5/23 and a lateral glass stopcock fitted with a solid glass plug of NS 14,5/2,5 mm bore together with a 9 mm olive for secure tubing connection. This configuration from manufacturer Rettberg supports evacuation, gas exchange and controlled transfers typical of Schlenk-line work. Nominal volume is 250 ml (0,250 l) with a net weight of 0,151 kg. Originating in Germany and carrying the Rettberg ® mark, the flask is classified as Schlenk apparatus. The precision joint and side stopcock deliver tight seals needed to maintain inert conditions during synthesis, reagent transfer or short-term storage. Borosilicate glass 3.3 provides the chemical resistance and thermal stability required for repeated vacuum and temperature cycles in research and teaching laboratories. Pack size is one piece, ready for integration with matching NS 14,5/23 glassware.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 250 ml
- Joint size: NS 14,5/23
- Material: Borosilicate glass 3.3
- Stopcock: Lateral glass stopcock, solid plug NS 14,5/2,5 mm bore, olive 9 mm
- Number of necks: 1
- Technical Information Sheet:
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Questions about Nitrogen flask, 250 ml, socket size 14,5/23, side stopcock 2,5 mm bore,
What is this article?
Nitrogen flask, 250 ml, socket size 14,5/23, side stopcock 2,5 mm bore, is the article on this page. Luminix Health distributes Rettberg 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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.