Description
Two-necked flask, DURAN®, 500 ml is a laboratory round flask equipped with dual ground-glass joints for flexible multi-component setups. It features a centre neck NS 24/29 and an angled side neck NS 19/26, supporting concurrent use of condensers, addition funnels, gas inlets or probes without overcrowding the central port. Supplied as DURAN® glassware from manufacturer Lenz, the flask comes as one piece with a weight of 0,182 kg and is well suited to medium-scale synthetic and preparative work. The angled side neck improves access and cable or tubing routing around the main joint during complex assemblies. Standard joint sizes ensure compatibility with common European stoppers, adapters and ancillary glassware for secure seals. Typical applications cover organic synthesis, reflux and distillation trains, solvent handling and instructional laboratories that require simultaneous reagent addition and vapour control. With a 500 ml capacity, the vessel balances useful working volume against ease of clamping, heating and manipulation on the bench. The two-neck layout streamlines closed-system construction for controlled chemistry workflows.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Capacity: 500 ml
- Material: DURAN®
- Centre neck: NS 24/29
- Side neck: angled NS 19/26
- Weight: 0,182 kg
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Two-necked flask, DURAN®, 500 ml, angled side neck 19/26, centre 24/29
What is this article?
Two-necked flask, DURAN®, 500 ml, angled side neck 19/26, centre 24/29 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. 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.