Description
Cone NS 24/29 extension is a precision ground-joint component designed for laboratory glassware assemblies that require an extended male cone connection. Conforming to DIN 12249 PRECISO specifications, this NS cone with extension features a nominal joint size of NS 24/29, an outer diameter of 22 mm, an overall length of 150 mm and a wall thickness of 1,8 mm. The elongated profile supplies additional reach and alignment freedom when joining larger distillation, extraction or reaction apparatus. Offered in packs of 10 pieces from manufacturer Witeg, the cones ensure reliable, interchangeable joints within standard laboratory glass systems. Each unit has a net weight of 0,033 kg, combining manageable mass with the dimensional accuracy expected of quality laboratory glassware. Ideal for research, quality-control and teaching environments that depend on European-norm ground joints, the extension mates directly with existing NS 24/29 assemblies and helps preserve consistent geometry across multi-piece glassware configurations.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 10 pc(s)
- Joint size: NS 24/29
- Standard: DIN 12249 PRECISO
- Outer diameter: 22 mm
- Length: 150 mm
- Wall thickness: 1,8 mm
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Distillation & extraction glassware
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Distillation heads, adapters & columns
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Questions about ST-Cones ST 24/29 skirted
What is this article?
ST-Cones ST 24/29 skirted is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Distillation heads, adapters & columns, inside Distillation & extraction glassware, in Labware.
A still head, an adapter or a column is the glass between the boiling flask and the condenser. A Vigreux or packed column gives the vapour a surface so a closer-boiling mixture can separate. The joint sizes at both ends have to match the flask and the condenser.
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 Distillation heads, adapters & columns. The catalogue is Labware.
Shelves beside this one are Condensers, Ground-joint glassware (other) and Soxhlet & extraction apparatus.
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.

