Description
Round-bottom flask, 4000 ml, with socket NS 29/32 is a single-neck laboratory vessel designed for distillation, reaction and collection duties. Constructed from borosilicate glass 3.3, it provides solid chemical resistance and thermal stability for repeated heating and cooling cycles. The medium-neck layout incorporates a ground joint NS 29/32 for dependable mating with condensers, adapters and complementary glassware. This 4 l nominal-volume flask from manufacturer Rettberg has a net weight of 1,163 kg and is appropriate for larger preparative organic chemistry, solvent recovery and bulk sample handling. The round-bottom form encourages even heat distribution when paired with heating mantles, oil baths or rotary evaporators, while the single neck simplifies connection and cleaning. Supplied as one piece, it slots directly into standard laboratory assemblies that require NS 29/32 joints and functions effectively as either a distillation flask or a receiving flask in research and quality-control settings.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 4 l
- Material: Borosilicate glass 3.3
- Joint size: NS 29/32
- Neck type: Medium neck
- Number of necks: 1
- Technical Information Sheet:
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Questions about Round bottom flask, 4000 ml, socket size 29/32
What is this article?
Round bottom flask, 4000 ml, socket size 29/32 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.