Description
Round-bottom flask, 25 ml, socket NS 14,5/23 is a single-neck laboratory vessel made from borosilicate glass 3.3 with a medium neck and precision ground joint NS 14,5/23. The spherical design ensures uniform heat distribution during heating or cooling, while the 25 ml nominal volume suits microscale reactions, distillations and sample collection. Net weight is only 0,025 kg, yet the robust construction withstands thermal shock and common laboratory chemicals. Supplied as one piece, the flask integrates readily with matching condensers, adapters and other ground-joint components for vacuum or atmospheric work. Typical uses include organic synthesis, solvent recovery, receiving flask duties and teaching demonstrations. This item from manufacturer Rettberg originates in Germany and belongs to the established ranges of round-bottom, ground-joint, distillation and receiving flasks. The standardized NS 14,5/23 socket provides reliable, leak-tight connections that simplify assembly and disassembly in busy research or quality-control environments. Its compact size and chemical resistance make it a practical choice for everyday laboratory workflows requiring dependable small-volume 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: 25 ml
- Joint size: NS 14,5/23
- Material: Borosilicate glass 3.3
- Neck type: Medium neck
- Number of necks: 1
- Technical Information Sheet:
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Questions about Round bottom flask, 25 ml, socket size 14,5/23
What is this article?
Round bottom flask, 25 ml, 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 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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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.