Description
Three-necked round-bottom flask, DURAN®, 100 ml is a multi-port laboratory reaction vessel for setups that require three simultaneous ground-glass connections. It features a centre neck NS 29/32 and side necks NS 14/12, giving a larger central port for condensers or mechanical accessories while the side necks accommodate thermometers, addition funnels or gas inlets. The 100 ml round-bottom geometry supports even heating and efficient mixing during synthesis, reflux and controlled addition work. DURAN® glass construction maintains the dimensional stability needed for reliable standard-taper joints under typical laboratory thermal cycles. The three-neck configuration allows closed-system operation with multiple instruments attached at once, reducing the need for frequent disassembly. Supplied as a single unit with a weight of 0,095 kg, the flask is ready for integration into mixed NS joint assemblies. This three-necked round-bottom flask from manufacturer Lenz is suited to research, process-development and teaching laboratories that build modular reaction trains. Clearly stated joint sizes simplify pairing with matching stoppers, adapters and peripheral glassware.
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: 100 ml
- Centre neck: NS 29/32
- Side necks: NS 14/12
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Questions about Three-necked round-bottom flask, DURAN®, 100 ml, side necks 14/12, centre 29/32
What is this article?
Three-necked round-bottom flask, DURAN®, 100 ml, side necks 14/12, 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.

