Chromatographic Columns With Indentations And NS Socket
Product Code : EL-CC-10071
Lab Glassware Manufacturer manufactures and exports Chromatographic Columns With Indentations And NS Socket from its Ambala, Haryana facility, supplying school, college and research laboratories in India as well as export buyers that have recently included institutions in Greece, Cyprus and Malta — part of a wider base of enquiries from across Mediterranean Europe.
Quick answer: This is a basic chromatographic column fitted with a PTFE stopcock and retaining device, an NS socket at the top for connecting a solvent reservoir or adapter, and a set of internal indentations above the stopcock. The indentations hold a cotton wool plug in place to support the packing material, as an alternative to a sintered glass disc. It is manufactured in Borosilicate Glass 3.3.
| Feature | Specification |
|---|---|
| Stopcock | PTFE stopcock with retaining device |
| Top joint | NS socket |
| Packing support | Internal indentations above the stopcock for a cotton wool plug |
| Material | Borosilicate Glass 3.3 |
Supporting the Packing Without a Sintered Disc
Instead of a fused sintered disc, this column uses a ring of internal indentations moulded into the glass just above the PTFE stopcock. A small cotton wool plug rests on these indentations to hold the packing material (silica, alumina or similar media) in place while still allowing solvent to pass through and drain via the stopcock. The retaining device on the stopcock helps keep it seated during use, and the NS socket at the top accepts a reservoir or funnel for loading solvent.
Frequently Asked Questions
Why use indentations and a cotton plug instead of a sintered disc?
Indentations with a cotton wool plug are a simpler, lower-cost way to support packing material than a fused sintered disc, and are a standard alternative on basic gravity chromatography columns.
What does the stopcock retaining device do?
It helps hold the PTFE stopcock securely seated in the column body during use and handling, reducing the risk of it working loose.
What connects to the NS socket at the top?
The NS (interchangeable ground-glass) socket accepts a matching-size reservoir, funnel or adapter for loading solvent and sample onto the column packing.
Related Products
See the full range on the Chromatography Columns page, including fritted-disc columns and other PTFE-stopcock chromatography column options.
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Last updated: September 2026.