Description
Two-necked flask, DURAN®, 2000 ml is a laboratory multi-neck vessel with ground glass joints for simultaneous connection of accessories during synthesis, distillation or reflux work. It combines a centre neck 29/32 with an angled side neck 19/26, giving flexible access for stirrers, condensers, thermometers or addition funnels while keeping the assembly compact. Offered as one piece and weighing 0,516 kg, this DURAN® flask from manufacturer Lenz is intended for preparative chemistry and routine laboratory processes that need a 2000 ml working volume. The angled side neck improves handling when apparatus is mounted on a stand and helps reduce strain on joints during prolonged heating. Laboratories use such two-necked flasks for organic reactions, solvent concentration and gas-inlet setups under controlled atmosphere. Clear DURAN® glass supports visual monitoring of colour changes, phase separation and boiling behaviour. Standardised joint sizes ensure compatibility with common laboratory glassware components, simplifying assembly of custom reaction trains in research, teaching and quality-control environments.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Product type: Two-necked flask
- Glass type: DURAN®
- Capacity: 2000 ml
- Centre neck: 29/32
- Side neck: angled 19/26
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Questions about Two-necked flask, DURAN®, 2000 ml, angled side neck 19/26, centre 29/32
What is this article?
Two-necked flask, DURAN®, 2000 ml, angled side neck 19/26, centre 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 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 Beakers & flasks. The sub-category is Round-bottom flasks. The catalogue is Matériel de laboratoire.
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.
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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.