Description
Spherical joint ball KS 19/9 is a laboratory glassware fitting designed for grease-free, flexible spherical ground-joint connections. Fabricated from borosilicate glass 3.3, this ball component is part of the Rotulex system and serves as the male spherical joint element in modular glass apparatus, reaction setups and vacuum lines. The KS 19/9 size designation corresponds to a widely used intermediate spherical joint standard, enabling angular adjustment between glass sections without the application of joint grease. This reduces the risk of sample contamination and eases cleaning after use. Delivered as one piece with a net weight of 0,019 kg, the joint ball is suitable for analytical, synthetic and process laboratories that rely on adaptable Schliff connections. Manufactured by Rettberg within the Rotulex range, it offers secure yet movable coupling of borosilicate glassware under normal laboratory thermal and chemical loads. Borosilicate glass 3.3 ensures good resistance to thermal shock and chemical attack. The component fits standard Rotulex and KS spherical joint assemblies wherever a grease-free, flexible ball joint of size KS 19/9 is required.
This article is part of Ground-joint glassware (other), in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Joint size: KS 19/9
- Material: Borosilicate glass 3.3
- System: Rotulex
- Connection type: Grease-free, flexible
- Technical Information Sheet:
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Questions about Spherical joint ball size 19/9, for grease-free, flexible connection,
What is this article?
Spherical joint ball size 19/9, for grease-free, flexible connection, is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Verrerie à rodage (autre), inside Verrerie de distillation & d'extraction, in Matériel de laboratoire.
This is ground-joint glassware that is not a head, a condenser or a Soxhlet: receivers, blank joints, odd adapters. A ground joint is named by the wide end and the length, such as 29/32. Mismatched joints do not seal, even with grease.
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 Verrerie de distillation & d'extraction. The sub-category is Verrerie à rodage (autre). The catalogue is Matériel de laboratoire.
Shelves beside this one are Têtes de distillation, adaptateurs & colonnes, Condenseurs and Appareils Soxhlet & d'extraction.
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.