Description
Conical ground joints NS 19/26 are standardised laboratory joint cores produced in accordance with DIN 12249 for secure coupling of glassware. The NS 19/26 size defines a mid-range cone commonly used on reaction flasks, condensers, and intermediate adapters in organic synthesis, distillation, and general analytical work. Supplied as the Kern (core) variant, the piece forms the male ground cone that engages a corresponding NS 19/26 socket, enabling interchangeable assemblies across modular laboratory setups. Pack size is one piece, so individual joints can be stocked or replaced as apparatus configurations change. Compliance with DIN 12249 supports dimensional consistency and cross-compatibility with other components that follow the same standard. These conical joints from manufacturer Schlee are intended for routine laboratory material use in research, teaching, and quality-control environments. The NS 19/26 format balances working volume and handling convenience, making it a frequent choice for medium-scale glass trains where reliable, standardised ground connections are required without departing from established NS geometry.
This article belongs on Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc(s)
- Product type: Conical ground joint core
- Nominal size: NS 19/26
- Standard: DIN 12249
- Joint form: Core (Kern)
- Technical Information Sheet:
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Questions about Conical joints according DIN 12249, cone NS 19/26
What is this article?
Conical joints according DIN 12249, cone NS 19/26 is the article on this page. Luminix Health distributes Schlee for laboratory use. It sits in Distillation heads, adapters & columns, inside Distillation & extraction glassware, in Matériel de laboratoire.
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 Matériel de laboratoire.
Shelves beside this one are Condensers, Ground-joint glassware (other) and Soxhlet & extraction apparatus.
What should I check before I order?
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.