Fractionating Columns Plain

Product Code : EL-CC-10217

Lab Glassware Manufacturer manufactures and exports Fractionating Columns, Plain from its Ambala, Haryana facility, supplying school, college and research laboratories in India as well as export buyers that have recently included institutions in Namibia, Botswana and Zimbabwe — part of a wider base of enquiries from across Southern Africa.

Quick answer: A plain fractionating column is a straight, unindented column with no internal spiral or bulb, used as a simple, economical spacer stage in a distillation train or as a baseline against which packed and indented columns are compared. It offers high temperature resistance, very good chemical resistance and minimal thermal expansion, and is available in six length and joint-size combinations.

When a Plain Column Is the Right Choice

Without indentations, a spiral or a bulb, a plain column gives less vapour-liquid contact per unit length than the Vigrex, Dufton or pear-bulb options in this range, but it is simpler, easier to clean and lower cost. It suits use as a straightforward spacer or riser section, or distillations where a high degree of fractionation is not the priority. Minimal thermal expansion and high temperature resistance let it handle repeated heating and cooling cycles across a range of solvents.

Frequently Asked Questions

When should I choose a plain column over an indented or packed one?
A plain column suits applications where a high degree of fractionation is not required, or where simplicity and ease of cleaning matter more than maximum separation efficiency; for closer-boiling mixtures, an indented (Vigrex) or spiral (Dufton) column gives better separation.

Why does minimal thermal expansion matter?
Minimal thermal expansion gives the column better resistance to thermal shock during the repeated heating and cooling cycles typical of distillation work.

How do I choose between the six length and joint combinations?
Match the socket and cone size (24/29 or 34/35) to your still head, flask and receiver, and choose the effective length based on the bench height available and the separation the application needs.

Related Products

See the full range on the Chromatography Columns page, including the Vigrex, Dufton and pear-bulb fractionating columns.

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Last updated: September 2026.