Description
Long ground joint cone NS 24/40 is a precision laboratory glassware component for modular apparatus built around interchangeable standard joints. It presents an outer diameter of 22 mm, a length of 150 mm and a wall thickness of 1,8 mm, giving a stable male cone that mates reliably with matching NS 24/40 sockets. The extended ground surface supports leak-tight connections in distillation trains, reaction assemblies, condensers and vacuum lines commonly used in organic synthesis and analytical work-up. Supplied as a single piece with a net weight of 0,036 kg, the cone maintains consistent geometry for reproducible set-ups on the bench. This long ground joint cone from manufacturer Witeg integrates into multi-neck flasks, adapters and columns without custom fitting, making it suitable for chemical research, process development and teaching laboratories that rely on the European standard joint series. Its robust wall and defined taper help preserve seal integrity through repeated assembly and cleaning cycles in routine laboratory practice.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Joint size: NS 24/40
- 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 Core long grinding ST24/40
What is this article?
Core long grinding ST24/40 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.