Description
Extractor 250 ml is a specialised liquid-liquid extraction unit designed for both light and heavy solvents in laboratory workflows. Equipped with a hollow NS compact stopcock, it features a cone joint NS 29/32 and a socket joint NS 45/40 for secure, standardised glassware connections. This configuration supports efficient phase separation and solvent handling during continuous or batch extraction procedures. The 250 ml capacity suits routine sample preparation, natural product isolation and analytical chemistry applications where reliable liquid-liquid transfer is required. Manufactured by Witeg, the extractor integrates cleanly into existing ground-joint assemblies and distillation or reflux setups. Its compact stopcock design facilitates controlled flow while maintaining chemical resistance typical of laboratory borosilicate systems. Ideal for research, quality control and teaching laboratories needing a dedicated extractor body for light and heavy solvent pairs.
This article is part of Soxhlet & extraction apparatus, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Capacity: 250 ml
- Extraction type: Liquid-liquid (light and heavy solvents)
- Cone joint: NS 29/32
- Socket joint: NS 45/40
- Stopcock: Hollow NS compact stopcock
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Distillation & extraction glassware
Sub-category
Soxhlet & extraction apparatus
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Questions about Extractor, 250 ml, liquid- li./lighter
What is this article?
Extractor, 250 ml, liquid- li./lighter is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Soxhlet & extraction apparatus, inside Distillation & extraction glassware, in Labware.
A Soxhlet extractor washes a solid with clean hot solvent over and over: the chamber fills, siphons, and fills again. The extractor, the flask and the condenser are sized together. The thimble holds the solid. Extractor size is given as the siphon volume.
Distillation separates liquids by boiling point. A condenser turns the vapour back into liquid: Liebig, coil and cold-finger shapes differ in how much cooling surface they offer. A still head and a column sit between the flask and the condenser. A Soxhlet extractor washes a solid again and again with the same solvent. Ground joints have a standard size, and the joint, not the flask, is what has to match. The pieces are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Distillation & extraction glassware. The sub-category is Soxhlet & extraction apparatus. The catalogue is Labware.
Shelves beside this one are Distillation heads, adapters & columns, Condensers and Ground-joint glassware (other).
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.

