Description
Two-necked flask, DURAN®, 1000 ml is a laboratory round flask with ground glass joints designed for larger multi-port reaction and distillation work. The vessel provides a 1000 ml capacity and combines a centre neck NS 24/29 with an angled side neck NS 19/26, allowing simultaneous connection of condensers, addition funnels, stoppers or measuring probes while the main body remains available for the process. Produced from DURAN® glass by manufacturer Lenz, it suits preparative chemistry, reflux and general jointed-glassware procedures that need dual access at litre scale. The angled side neck improves spatial clearance between attached components on the stand or in the fume hood. Delivered as 1 pc and weighing 0,308 kg, the flask fits standard NS glassware collections and common heating-mantle formats. Explicit joint sizes (centre 24/29, angled side 19/26) support straightforward matching and replacement in teaching, research and quality-control laboratories that depend on interchangeable ground-joint assemblies for medium- to larger-scale liquid handling and synthesis.
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 round flask
- Material: DURAN® glass
- Capacity: 1000 ml
- Centre neck: NS 24/29
- Side neck: angled NS 19/26
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Questions about Two-necked flask, DURAN®, 1000 ml, angled side neck 19/26, centre 24/29
What is this article?
Two-necked flask, DURAN®, 1000 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.
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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.