Description
Long ground joint cone NS 14/35 is a precision laboratory glassware fitting engineered for standard taper connections in chemical apparatus and analytical setups. Featuring nominal joint size NS 14/35, the cone provides an outer diameter of 13 mm, an overall length of 120 mm and a wall thickness of 1,5 mm, delivering extended engagement for leak-resistant joints under vacuum or atmospheric operation. The single-piece unit connects directly into distillation systems, reaction assemblies, condensers and modular glassware trains that depend on interchangeable ground joints. Produced by manufacturer Witeg, the long cone geometry ensures dimensional interchangeability according to established European ground-joint conventions, allowing laboratories to combine compatible components without adapters. Organic synthesis groups, teaching laboratories and industrial process teams value the consistent fit and durability during repeated assembly cycles and thermal stress. The robust 1,5 mm wall supports resistance to chipping and everyday handling while remaining suitable for standard joint greases and cleaning protocols. This NS 14/35 long ground joint cone forms a practical foundation for building and maintaining reliable glass apparatus in research and production environments.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Joint size: NS 14/35
- Outer diameter: 13 mm
- Length: 120 mm
- Wall thickness: 1,5 mm
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Distillation & extraction glassware
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Distillation heads, adapters & columns
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Questions about Cone ST full length ST 14/35, A-Ø 13 mm,
What is this article?
Cone ST full length ST 14/35, A-Ø 13 mm, 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.
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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.