Description
Separating funnel 250 ml Squibb type is a classic laboratory glassware item for liquid–liquid extractions and phase separations. Manufactured from borosilicate glass 3.3 in accordance with DIN ISO 4800, this ungraduated funnel offers high chemical resistance and thermal stability for everyday analytical and preparative work. It is fitted with a stopcock carrying an NS PTFE plug, stopcock joint NS 14,5 and a bore of 2,5 mm, plus a poly stopper NS 29/32 for secure closure. The nominal volume is 0,25 l. The pear-shaped Squibb geometry allows clear observation of phase boundaries and complete drainage of the lower layer. Pack size is 2 pieces. Produced by manufacturer Marienfeld, the funnel is well suited to organic synthesis, sample clean-up, solvent extraction and quality-control laboratories where reliable separation of immiscible liquids is required. The PTFE plug ensures smooth, leak-resistant operation even with aggressive organic solvents, while the robust glass body withstands repeated use and cleaning cycles.
This article is part of Separating funnels, in Funnels.
Key features
- Pack size: 2 pc(s)
- Design: Squibb type, DIN ISO 4800
- Nominal volume: 250 ml
- Material: Borosilicate glass 3.3
- Stopcock: NS PTFE plug, joint NS 14,5, bore 2,5 mm
- EAN: 4250317311948
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Questions about Separatory funnels 250 ml,
What is this article?
Separatory funnels 250 ml, is the article on this page. Luminix Health distributes Marienfeld 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?
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.