Description
Double neck round flask, DURAN®, 500 ml is a laboratory glass vessel for larger-scale reactions, distillations and multi-port setups requiring concurrent access through two ground joints. It features a centre neck NS 29/32 and a parallel side neck NS 14/23, enabling secure attachment of condensers, addition funnels, gas lines or thermometers while the round bottom supports uniform heating and efficient stirring. Made from DURAN® glass and supplied as one piece weighing 0,180 kg, the flask is intended for preparative organic chemistry, solvent work and teaching environments that depend on interchangeable NS joints. The parallel side-neck design helps maintain a compact apparatus layout on the bench or within a heating mantle. Offered by manufacturer Lenz in the double-neck round-flask series, the 500 ml capacity suits medium preparative batches, reflux and inert-atmosphere operations. Clear DURAN® construction permits continuous visual control of the mixture throughout heating, mixing and work-up steps.
This article belongs on Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Product type: Double neck round flask
- Glass type: DURAN®
- Capacity: 500 ml
- Centre neck: NS 29/32
- Side neck: parallel NS 14/23
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Questions about Double neck round flask, DURAN®, 500 ml, side neck parallel NS 14/23, 1 unit(s)
What is this article?
Double neck round flask, DURAN®, 500 ml, side neck parallel NS 14/23, 1 unit(s) 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.