Description
Separating funnel with PTFE stopcock, DURAN®, conical form, is a laboratory glass vessel intended for liquid–liquid phase separations. This 250 ml conical funnel carries a PTFE stopcock that allows controlled draining of the lower phase once the layers have settled. DURAN® glass together with the conical profile aids clear observation of interfaces during extraction, washing and partitioning work. Supplied as 1 pc(s) with a weight of 0,297 kg, the funnel is well suited to routine analytical, preparative and teaching applications. Manufacturer Lenz supplies this model within the DURAN® conical separating-funnel series used for organic and aqueous work-ups. The 250 ml volume offers a practical mid-range capacity for typical solvent loads without the bulk of larger vessels. Conical geometry concentrates the denser phase at the stopcock for clean collection. Laboratories running multi-step extractions, solvent exchanges or wash sequences can mount the funnel in standard clamps and stands. PTFE stopcock operation and DURAN® construction make it a dependable choice for everyday phase-separation tasks on the laboratory bench.
This article belongs on Separating funnels, in Funnels.
Key features
- Pack size: 1 pc(s)
- Capacity: 250 ml
- Form: Conical
- Stopcock: PTFE
- Glass type: DURAN®
- Weight: 0,297 kg
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Questions about Separating funnel, with PTFE stopcock, DURAN®, conical form, 250 ml, 1 unit(s)
What is this article?
Separating funnel, with PTFE stopcock, DURAN®, conical form, 250 ml, 1 unit(s) is the article on this page. Luminix Health distributes Lenz for laboratory use. It sits in Separating funnels, inside Funnels, in Labware.
A separating funnel lets two immiscible liquids settle into layers and then runs off the lower one through a stopcock. The shape, Squibb or pear, changes how sharp the interface is as the last millilitres leave. The stopper and the stopcock are both needed.
A funnel guides a liquid or a powder into a narrower mouth. A filter funnel holds a paper. A Büchner funnel is the flat perforated plate used with vacuum. A separating funnel has a stopcock so two liquid layers can be run off one at a time. A dropping funnel adds a reagent slowly into a reaction. The bore and the stopcock are the parts that matter. This glassware is listed under ISO laboratory glassware.
Which category should I open next?
The category is Funnels. The sub-category is Separating funnels. The catalogue is Labware.
Shelves beside this one are Funnels (plastic, glass & steel), Büchner & filter funnels, Dropping funnels and Powder funnels.
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.

