Description
Four-necked round bottom flask, 2000 ml is a DURAN® multi-neck vessel featuring a centre neck NS 29/32 and side neck NS 29/32 with parallel side necks for larger-scale laboratory reactions. The two-litre round-bottom geometry supports uniform heating and effective stirring in heating mantles or baths during synthesis, reflux and multi-component process work. Parallel side necks simplify simultaneous connection of condensers, dropping funnels, thermometers and mechanical or magnetic stirrer guides while maintaining standard NS 29/32 joint compatibility. Delivered as one piece with a weight of 0,576 kg, this flask from manufacturer Lenz fits established ground-glass laboratory assemblies. It is suited to preparative chemistry, scale-up trials and teaching laboratories that require four independent ports on a single round-bottom flask. The configuration helps keep systems closed during controlled additions, inert-gas blanketing or distillations and reduces the need for additional adapters. It forms part of the range of round flasks with ground glass joints used in research and routine laboratory practice.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc(s)
- Product type: Four-necked round bottom flask
- Capacity: 2000 ml
- Centre neck: NS 29/32
- Side necks: NS 29/32, parallel
- Glass type: DURAN®
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Questions about Four-necked round bottom flask, 2000 ml, centre neck NS 29/32
What is this article?
Four-necked round bottom flask, 2000 ml, centre neck NS 29/32 is the article on this page. Luminix Health distributes Lenz 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
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.

