Description
Round-bottom flask, 5 ml, socket NS 14,5/23 is a precision laboratory vessel made from borosilicate glass 3.3 for reliable use in chemical synthesis, distillation and sample handling. This single-neck flask features a medium neck and a standard ground joint of NS 14,5/23, ensuring secure, interchangeable connections with condensers, adapters and other jointed glassware. Its nominal volume of 5 ml and low net weight of 0,014 kg make it especially practical for microscale reactions, small-volume distillations and limited-sample work where reagent economy matters. The borosilicate glass 3.3 construction delivers the thermal-shock resistance and chemical durability required for heating, cooling and vacuum applications. Supplied as 1 pc from manufacturer Rettberg, the flask serves equally well as a reaction vessel, distillation flask or receiving flask in teaching, research and quality-control laboratories. Consistent joint dimensions and proven material quality support reproducible results across routine analytical and preparative workflows.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 5 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, 5 ml, socket size 14,5/23
What is this article?
Round bottom flask, 5 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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
