Description
Socket joint DURAN (Form E) NS 34/35 is a ground glass socket component manufactured from borosilicate glass 3.3 for standard laboratory apparatus connections. It corresponds to the NS 34/35 joint size and features a tube diameter of 40 mm together with a wall thickness of 2,3 mm. The overall length is 150 mm and the net weight is 0,065 kg. This Form E socket joint from manufacturer Rettberg is designed for modular assembly of glassware systems that rely on interchangeable ground joints. It serves as a reliable female connection element in distillation setups, reaction apparatus and other multi-part glass configurations commonly used in chemical and analytical laboratories. The borosilicate glass 3.3 construction matches established laboratory glass standards for thermal and chemical compatibility. Supplied as 1 pc, the joint allows straightforward integration into existing DURAN-compatible lines while maintaining dimensional consistency across standard NS interfaces. Country of origin is Germany and the product type is classified as a standard joint (Normschliff).
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Joint size: NS 34/35
- Tube diameter: 40 mm
- Wall thickness: 2,3 mm
- Length: 150 mm
- Material: Borosilicate glass 3.3
- Technical Information Sheet:
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Questions about Joint socket/DURAN (shape E) size 34/35
What is this article?
Joint socket/DURAN (shape E) size 34/35 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 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.
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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.