Beschrijving
2-Neck flask, 2000 ml, with centre neck socket NS 29/32 and side neck socket NS 29/32 angled at 20° is a robust laboratory vessel made from borosilicate glass 3.3. Designed as a two-neck round flask, it provides a nominal volume of 2 l and supports secure ground-joint connections for distillation, reaction and collection work. The main neck and the 20° angled side neck both use the standard NS 29/32 joint size, ensuring broad compatibility with condensers, dropping funnels and other common glassware. Borosilicate glass 3.3 delivers high chemical resistance and good thermal stability for everyday laboratory use. With a net weight of 0,513 kg, the flask is practical for bench-scale setups. This configuration from manufacturer Rettberg is well suited to multi-neck reaction assemblies, receiving flasks and distillation trains where simultaneous reagent addition and vapour handling are required. It belongs to the product families of round-bottom flasks, ground-joint flasks, distillation flasks and receiving flasks, offering reliable performance in analytical and preparative chemistry environments.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 2 l
- Material: Borosilicate glass 3.3
- Number of necks: 2
- Joint size: NS 29/32
- Side neck angle: 20°
- Technical Information Sheet:
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Questions about Rondbodemkolf met 2 halzen, 2000 ml, mh-grootte 29/32, zh-grootte 29/32
What is this article?
Rondbodemkolf met 2 halzen, 2000 ml, mh-grootte 29/32, zh-grootte 29/32 is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Rondbodemkolven, inside Bekerglazen & kolven, in Labmateriaal.
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 Bekerglazen & kolven. The sub-category is Rondbodemkolven. The catalogue is Labmateriaal.
Shelves beside this one are Bekerglazen, Erlenmeyerkolven, Reactievaten & mantelvaten, Kolven met vlakke bodem, Kolven (overig) and Bekerglas- & kolfaccessoires.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.