Description
Flash chromatography column 20×400 mm is a glass laboratory column designed for preparative flash separations in organic synthesis and natural-product isolation. The column has an internal diameter of 20 mm and a bed length of 400 mm, giving a practical working volume for medium-scale purifications under moderate pressure. It is supplied complete with an adapter and a PTFE stopcock, allowing secure solvent connection and controlled elution without metal contact in the wetted path. Glass construction supports visual monitoring of the stationary phase and solvent front during packing and run. Typical applications include normal-phase and reverse-phase flash work with silica or bonded media, fraction collection, and method scouting before scale-up. The unit is offered as a single piece from manufacturer Macherey-Nagel and fits standard flash chromatography workflows in research and process-development laboratories. Compact dimensions and the integrated PTFE valve simplify setup on a stand or rack while maintaining chemical resistance to common organic solvents used in flash chromatography.
This article is part of Flash, empty & glass chromatography columns, in SPE & sample preparation.
Key features
- Pack size: 1 pc
- Product type: Flash chromatography column
- Material: Glass
- Internal diameter: 20 mm
- Length: 400 mm
- EAN: 4046681074707
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Questions about Flash chromat. column 20x400 mm
What is this article?
Flash chromat. column 20x400 mm is the article on this page. Luminix Health distributes Macherey-Nagel for laboratory use. It sits in Flash, empty & glass chromatography columns, inside SPE & sample preparation, in Chromatography equipment.
A flash column or an empty glass column is the tube a separation is packed or run in, under gravity or under air pressure. Diameter and length, and whether it arrives prepacked, are the choices. An empty column still needs a frit and a sorbent.
Solid-phase extraction holds a compound on a sorbent while the rest of the sample is washed away, then releases it in a small volume. The sorbent, the bed mass and the solvents are the method. Silica, ion exchangers and polymer phases do different jobs. A flash column is the same idea scaled toward purification rather than trace cleanup. The molecules are on PubChem, named by IUPAC.
Which category should I open next?
The category is SPE & sample preparation. The sub-category is Flash, empty & glass chromatography columns. The catalogue is Chromatography equipment.
Shelves beside this one are SPE cartridges & columns and Sorbents, silica gel & ion exchangers.
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.

