Description
Two-necked flask, DURAN®, 500 ml is a multi-neck laboratory vessel designed for reaction, distillation and related chemistry tasks that need two independent ground-glass connections. The centre joint NS 29/32 pairs with an angled side neck NS 19/26, allowing condensers, dropping funnels, sensors or gas lines to be mounted together in a tidy arrangement. Produced in DURAN® glassware from manufacturer Lenz, it is offered as a single piece weighing 0,178 kg and supports medium-scale laboratory procedures. The angled side neck keeps the working area around the central port clearer and aids orderly apparatus build-up in the fume hood. Matching ground joints provide dependable seals with standard European stoppers, adapters and complementary glass components. Common uses include organic synthesis, reflux setups, solvent recovery and teaching experiments where reagent addition and vapour management must run in parallel. The 500 ml capacity delivers a practical working volume with a still-manageable size for heating, stirring and clamping. This two-neck configuration helps minimise extra adapters when assembling closed systems for controlled reactions.
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 29/32
- Side neck: angled NS 19/26
- Weight: 0,178 kg
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Questions about Two-necked flask, DURAN®, 500 ml, angled side neck 19/26, centre 29/32
What is this article?
Two-necked flask, DURAN®, 500 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 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.