Beschrijving
Cone joint DURAN (Form B) NS 45/40 is a precision standard ground joint fabricated from borosilicate glass 3.3 for reliable laboratory glassware connections. This Form B cone provides the NS 45/40 joint size with a tube diameter of 40 mm and wall thickness of 2,3 mm, delivering a sturdy yet lightweight component measuring 150 mm in length and weighing 0,085 kg. The material offers high chemical resistance and thermal stability suited to distillation assemblies, reaction setups and general apparatus requiring interchangeable ground interfaces. Produced by manufacturer Rettberg, the joint ensures dimensional accuracy for leak-tight mating with matching sockets under typical laboratory conditions. Its clear DURAN glass construction supports visual monitoring while withstanding repeated thermal cycling and cleaning. Supplied as a single piece, the cone joint integrates easily into existing glass systems used in research, analytical and process environments where standardized Normschliff connections are essential for modular apparatus design and safe fluid or vapour transfer.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Joint size: NS 45/40
- Tube diameter: 40 mm
- Length: 150 mm
- Wall thickness: 2,3 mm
- Material: Borosilicate glass 3.3
- Technical Information Sheet:
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Questions about Joint cone/DURAN (shape B) size 45/40
What is this article?
Joint cone/DURAN (shape B) size 45/40 is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Distillation heads, adapters & columns, inside Distillation & extraction glassware, in Labmateriaal.
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 Labmateriaal.
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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.