Description
Separating funnel 250 ml is a conical laboratory separating funnel manufactured from borosilicate glass 3.3 in accordance with DIN ISO 4800. It is fitted with a stopcock carrying an NS PTFE plug, blue graduation, a poly stopper NS 29/32, stopcock ground joint NS 14,5 and a bore of 2,5 mm. The nominal volume is 0,25 l. Supplied as a pack of 2 pieces from manufacturer Marienfeld, this funnel is intended for liquid-liquid extractions and clean phase separations in analytical, preparative and educational laboratories. The conical geometry promotes sharp interfaces between immiscible layers while the PTFE plug ensures chemical inertness and reliable sealing with common organic and aqueous solvents. Blue graduations assist approximate volume estimation during work-up. Borosilicate glass 3.3 provides high resistance to thermal shock and aggressive reagents. Standardised ground joints allow straightforward integration into existing glassware assemblies for organic synthesis, environmental analysis, pharmaceutical sample preparation and quality-control workflows requiring reproducible separations.
This article is part of Separating funnels, in Funnels.
Key features
- Pack size: 2 pc(s)
- Material: Borosilicate glass 3.3
- Nominal volume: 0,25 l
- Design: Conical form, DIN ISO 4800
- Stopcock: NS PTFE plug, joint NS 14,5, bore 2,5 mm
- EAN: 4250317311757
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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 Ampoules à décanter, inside Entonnoirs, in Matériel de laboratoire.
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 Entonnoirs. The sub-category is Ampoules à décanter. The catalogue is Matériel de laboratoire.
Shelves beside this one are Entonnoirs (plastique, verre & acier), Entonnoirs Büchner & filtrants, Entonnoirs à addition and Entonnoirs à poudre.
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.