Description
4-Neck flask 2000 ml with straight side necks is a multi-neck round-bottom laboratory vessel intended for distillation, synthesis and reaction set-ups that require simultaneous access points. It combines a centre neck with straight side necks, all finished as NS 29/32 ground joints, giving a standardised connection interface for condensers, stirrers, dropping funnels and sensors. The nominal volume of 2 l supports preparative-scale work while the four-neck layout allows parallel addition, reflux and monitoring without repeated disassembly. Manufactured to DIN 12392, the flask from manufacturer Witeg is suited to organic synthesis, fractional distillation and multi-component reactions in research and process laboratories. Straight side-neck geometry reduces angular interference when several pieces of glassware are mounted together, improving apparatus stability on the bench or in a heating mantle. With a net weight of 0,626 kg the vessel remains manageable for routine handling yet robust enough for repeated thermal cycling. Typical applications include receiving and reaction flasks in distillation trains, multi-reagent syntheses and controlled atmosphere work where reliable ground-joint sealing is essential.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Number of necks: 4
- Nominal volume: 2 l
- Joint size: NS 29/32
- Neck type: Straight side necks, centre neck + side necks
- Standard: DIN 12392
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Questions about Flask 4 necks 2000 ml necks parallel CN + SN
What is this article?
Flask 4 necks 2000 ml necks parallel CN + SN is the article on this page. Luminix Health distributes Witeg 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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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. 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.

