Description
Separating funnel, 250 ml, Squibb, ungraduated with glass key NS 14,5/4 mm is a classic laboratory vessel for liquid-liquid extractions and phase separations. Fabricated from borosilicate glass 3.3, it combines chemical resistance with thermal stability and features a solid glass stopcock of NS 14,5/4 mm bore together with a PE stopper NS 29/32. The ungraduated Squibb pear-shaped body holds a nominal volume of 0,25 l and weighs 0,209 kg net, supplied as a single piece. This design from manufacturer Rettberg promotes clean interfaces between immiscible layers and allows precise flow control during drainage. Suitable for organic synthesis, sample work-up, washing steps and solvent recovery, the funnel supports routine analytical and preparative workflows. The ground joint ensures a secure seal while the massive glass key provides reliable, leak-free operation without additional inserts. Laboratory users value the clarity of the glass and the robust construction for repeated use in research, quality-control and teaching environments where reproducible separations are required.
This article is part of Separating funnels, in Funnels.
Key features
- Pack size: 1 pc
- Nominal volume: 0,25 l
- Design: Squibb, ungraduated
- Glass key: NS 14,5/4 mm
- Joint size: NS 29/32
- Material: Borosilicate glass 3.3
- Technical Information Sheet:
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Questions about Separatory funnel, 250 ml, Squibb, non-grad., glass plug size 14,5/4 mm,
What is this article?
Separatory funnel, 250 ml, Squibb, non-grad., glass 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.