Fractionating Columns Dufton
Product Code : EL-CC-10212
Lab Glassware Manufacturer manufactures and exports Fractionating Columns, Dufton from its Ambala, Haryana facility, supplying school, college and research laboratories in India as well as export buyers that have recently included institutions in Brazil, Argentina and Chile — part of a wider base of enquiries from across South America.
Quick answer: A Dufton fractionating column comprises a column body fitted with an accurately made glass spiral insert, which increases the internal surface area for vapour-liquid contact during distillation. The spiral can be removed for cleaning, and the column offers very good chemical and high-temperature resistance. It is available in 150mm and 300mm effective lengths with two cone-size options.
| Effective length | Socket size | Cone size |
|---|---|---|
| 150mm | 24/29 | 19/26 |
| 300mm | 24/29 | 19/26 |
| 150mm | 24/29 | 24/29 |
| 300mm | 24/29 | 24/29 |
Why a Removable Glass Spiral
The accurately fitted Dufton spiral increases the surface area inside the column, giving more opportunity for vapour and liquid to reach equilibrium as they pass along it, which improves separation compared with a plain, unpacked column. Because the spiral is removable rather than fused in place, it can be taken out for thorough cleaning between uses instead of relying on flushing the assembled column, which matters for glassware that may see mixed reagents over time.
Frequently Asked Questions
What does the Dufton spiral do?
The glass spiral fitted inside the column increases internal surface area, promoting repeated vapour-liquid contact along the column and improving separation efficiency compared with an unpacked column.
Can the spiral be cleaned or replaced?
Yes, the spiral is designed to be removed from the column body for cleaning rather than being permanently fused in place.
Which length and cone size should I choose?
Choose the effective length based on the separation demands of the mixture being distilled, and match the socket and cone size (24/29, 19/26) to the rest of your distillation train; confirm the exact combination when enquiring.
Related Products
See the full range on the Chromatography Columns page, including the Vigrex fractionating column and other distillation column options.
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Ready to order Fractionating Columns, Dufton for your laboratory or export order? Contact Us for a quotation, or visit the Tenders page for bulk and institutional procurement.
Last updated: September 2026.