Description
Separating funnel 250 ml Squibb type is a graduated laboratory glassware item intended for liquid-liquid extractions and phase separations. Fabricated from borosilicate glass 3.3, it provides a nominal volume of 0,25 l and is fitted with a PTFE key stopcock of NS 14,5/4 mm bore that delivers chemical resistance and controlled flow. A PE stopper with NS 29/32 ground joint completes the assembly, ensuring a tight seal during shaking and settling. This Squibb-style funnel from manufacturer Rettberg carries clear graduations that support accurate volume reading throughout extraction, washing and partitioning steps. The robust glass body withstands typical thermal and chemical loads encountered in organic synthesis, analytical sample preparation and quality-control laboratories. Net weight is 0,236 kg, making the unit convenient for routine bench-top handling while retaining the mechanical stability expected of borosilicate 3.3. Suitable for aqueous and organic solvent systems, the funnel integrates readily into standard laboratory workflows requiring reliable phase separation and reproducible volume control.
This article is part of Separating funnels, in Funnels.
Key features
- Pack size: 1 pc
- Product type: Separating funnel
- Nominal volume: 0,25 l
- Material: Borosilicate glass 3.3
- Joint size: NS 29/32
- Stopcock: PTFE key NS 14,5/4 mm
- Technical Information Sheet:
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Questions about Separatory funnel, 250 ml, Squibb, grad., PTFE plug size 14,5/4 mm,
What is this article?
Separatory funnel, 250 ml, Squibb, grad., PTFE plug size 14,5/4 mm, is the article on this page. Luminix Health distributes Rettberg 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.