Beschreibung
Round-bottom flask 4000 ml with three necks is a multi-neck laboratory flask designed for larger-scale distillation, reaction and collection work. It features a centre neck with NS 45/40 ground joint together with two straight side necks NS 29/32, providing versatile ports for condensers, dropping funnels, mechanical stirrers or thermometers. The flask is produced from clear borosilicate glass 3.3, delivering the chemical resistance and thermal performance needed for demanding laboratory operations. Nominal volume is 4 l and net weight is 1,029 kg. Available as a single piece from manufacturer Witeg, it fits standard ground-joint assemblies common in research and industrial laboratories. The spherical shape encourages even heating and thorough mixing, while the three-neck configuration supports simultaneous addition of reagents, temperature control and vapour handling. Suitable roles include round-bottom flasks, ground-joint flasks, distillation flasks and receiving flasks. Clear glass construction ensures unobstructed visual monitoring of the contents at every stage.
This article belongs on Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 4 l
- Number of necks: 3
- Centre neck: NS 45/40
- Side necks: two straight NS 29/32
- Material: borosilicate glass 3.3, clear
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Questions about Round bottom flask 4000 ml three necks CN ST 45/40
What is this article?
Round bottom flask 4000 ml three necks CN ST 45/40 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Round-bottom flasks, inside Beakers & flasks, in Laborbedarf.
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 Laborbedarf.
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.