Description
Three-necked round-bottom flask, DURAN® is a multi-neck laboratory vessel offering a 3000 ml capacity, side necks 29/32 and a larger centre neck 45/40. The round-bottom geometry promotes uniform heating and efficient mixing when paired with suitable heating mantles or baths. The centre joint 45/40 accommodates bulkier fittings such as larger stirrer assemblies or wide-bore adapters, while the two side necks 29/32 remain available for condensers, addition funnels or temperature probes. This DURAN® flask from manufacturer Lenz supports multi-port reaction, reflux and preparative workflows that need both substantial volume and differentiated joint sizes. Clear glass walls allow continuous visual monitoring of the process. Supplied as 1 pc with a weight of 0,833 kg, the flask integrates readily into standard laboratory stands and clamp systems. The 3000 ml working volume combined with the 45/40 centre neck and 29/32 side necks makes this configuration especially useful when a wider central access port is required alongside conventional side connections.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Type: Three-necked round-bottom flask
- Glass: DURAN®
- Capacity: 3000 ml
- Side necks: 29/32
- Centre neck: 45/40
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Questions about Three-necked round-bottom flask, DURAN®, 3000 ml, side necks 29/32, centre 45/40
What is this article?
Three-necked round-bottom flask, DURAN®, 3000 ml, side necks 29/32, centre 45/40 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.