Description
Cone NS 40/38 DURAN is a precision ground-glass joint cone manufactured to DIN 12249 from DURAN tubing. It has an outer diameter (A-Ø) of 36 mm, a length of 150 mm and a wall thickness of 2,0 mm, providing a robust conical interface for larger laboratory glassware assemblies. Made from borosilicate glass 3.3, the cone delivers the chemical durability and thermal stability associated with DURAN® glass for distillation, reaction and vacuum apparatus. This NS 40/38 joint from manufacturer Witeg mates with corresponding sockets and fittings to build modular systems used in research and routine laboratory practice. Supplied as a single piece, it is intended for applications that require a dependable, reusable ground joint with defined geometry. The substantial wall and standardised taper support secure sealing and mechanical integrity through repeated assembly and temperature changes in analytical and preparative workflows.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Product type: Ground joint cone
- Joint size: NS 40/38
- Material: Borosilicate glass 3.3
- Standard: DIN 12249
- Outer diameter: 36 mm
Recently viewed
You may also like
Browse related categories
Category
Distillation & extraction glassware
Sub-category
Distillation heads, adapters & columns
Catalogue
Brand
Questions about ST-cone ST40/38 Duran
What is this article?
ST-cone ST40/38 Duran 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.