Description
Three-necked round-bottom flask, 250 ml, is a DURAN® vessel with centre neck 29/32 and side necks 29/32, the side necks angled for practical multi-port setups. The 250 ml capacity suits a wide range of bench-scale reactions, reflux and preparative work where several connections are needed at once. Angled side necks improve clearance for condensers, addition funnels, stirrers and sensors around the centre joint. Uniform NS 29/32 sizing on centre and side necks allows direct coupling to standard ground-glass components. Supplied as 1 pc with a weight of 0,165 kg, the flask is a robust single unit for everyday laboratory use. This flask from manufacturer Lenz is part of the DURAN® round-flask range with ground glass joints. The three-neck design keeps the working volume accessible while supporting simultaneous heating, mixing and reagent handling. Clear joint and volume specification simplifies matching to existing NS 29/32 apparatus in research, process-development and teaching environments.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Product type: Three-necked round-bottom flask
- Material: DURAN®
- Capacity: 250 ml
- Centre neck: 29/32
- Side necks: 29/32, angled
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Questions about Three-necked round-bottom flask, 250 ml, Centre neck 29/32, side neck 29/32
What is this article?
Three-necked round-bottom flask, 250 ml, Centre neck 29/32, side neck 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.