Description
Cylindrical separating funnel 250 ml NS 29/32 is an ungraduated laboratory glassware item manufactured from borosilicate glass for reliable liquid-liquid extractions and phase separations. It features a removable PTFE stopcock with a 2,5 mm bore together with an NS polyethylene stopper that matches the NS 29/32 ground joint, ensuring secure closure and controlled drainage. Conforming to DIN 12566, the cylindrical body permits clear observation of phase boundaries during partitioning steps. This funnel from manufacturer Witeg combines chemical resistance with thermal stability suited to a broad range of organic and aqueous solvents commonly encountered in analytical and preparative work. The 250 ml capacity supports typical sample volumes in synthesis, purification and quality-control laboratories. Supplied as a pack of 2 pieces, the design with interchangeable stopcock and stopper components facilitates straightforward maintenance and repeated use. Ideal for organic chemistry workflows, educational demonstrations and routine sample preparation where precise separation of immiscible liquids is required.
This article is part of Separating funnels, in Funnels.
Key features
- Pack size: 2 pc(s)
- Material: Borosilicate glass
- Capacity: 250 ml
- Shape: Cylindrical, ungraduated
- Joint size: NS 29/32
- Stopcock: Removable PTFE, 2,5 mm bore
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Separatory funnel cylindrical 250ml ST 29/32
What is this article?
Separatory funnel cylindrical 250ml ST 29/32 is the article on this page. Luminix Health distributes Witeg 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.
How does ordering and shipping work?
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.