Description
3-Neck flask, 2000 ml with centre neck NS 45/40 and two side necks NS 29/32 angled at 20° is a multi-neck laboratory vessel made from borosilicate glass 3.3. This round-bottom flask is intended for distillation, reaction set-ups and collection duties where several ground-glass connections are needed at once. The larger centre joint (NS 45/40) accommodates condensers or stirrer guides, while the two side necks (NS 29/32) set at 20° allow convenient attachment of dropping funnels, thermometers or gas inlets without crowding the apparatus. Nominal volume is 2 l and net weight is 0,550 kg, giving a stable yet manageable vessel for bench-scale work. Manufactured by Rettberg, the flask exhibits the thermal-shock resistance and chemical durability characteristic of borosilicate glass 3.3. It is supplied as one piece and suits synthetic, analytical and preparative workflows that require simultaneous multi-port access under controlled laboratory conditions.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 2000 ml
- Material: Borosilicate glass 3.3
- Number of necks: 3
- Centre neck: NS 45/40
- Side necks: 2 × NS 29/32 (angled 20°)
- Technical Information Sheet:
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Questions about ballon à fond à 3 cols, 2000 ml, mn taille 45/40, 2x sn taille 29/32
What is this article?
ballon à fond à 3 cols, 2000 ml, mn taille 45/40, 2x sn taille 29/32 is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Ballons à fond rond, inside Béchers & fioles, in Matériel de laboratoire.
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 Béchers & fioles. The sub-category is Ballons à fond rond. The catalogue is Matériel de laboratoire.
Shelves beside this one are Béchers, Fioles Erlenmeyer, Récipients de réaction & récipients à double enveloppe, Fioles à fond plat, Fioles (autres) and Accessoires pour béchers & fioles.
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.