Description
Two-necked flask, DURAN®, 2000 ml is a large-capacity jointed laboratory flask for scale-up synthesis, bulk reflux and multi-port preparative work. It features a centre neck NS 29/32 and an angled side neck NS 14/23, so condensers, addition funnels, gas inlets or probes can be fitted at the same time on standard ground joints. The 2000 ml volume is aimed at larger batches and process-oriented laboratory tasks where two independent ports improve control and safety. Made from DURAN® glass by manufacturer Lenz, the vessel is designed for integration into conventional jointed glassware systems used in research and production-support labs. Supplied as a single piece weighing 0,600 kg, it matches the stated NS joint sizes without intermediate adapters. The angled side neck offsets secondary apparatus from the main vertical line, which is useful on large heating mantles and busy stands. This DURAN® two-necked flask provides a robust 2000 ml option with defined centre and side joints for demanding laboratory glassware applications.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Capacity: 2000 ml
- Glass type: DURAN®
- Centre neck: NS 29/32
- Side neck: angled NS 14/23
- Neck configuration: two-necked
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Questions about Two-necked flask, DURAN®, 2000 ml, angled side neck 14/23, centre 29/32
What is this article?
Two-necked flask, DURAN®, 2000 ml, angled side neck 14/23, 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 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.