Description
Ground joint retainer NS 29 made of POM is a practical accessory for securing conical ground-glass joints on distillation apparatus and related glassware assemblies. Each pack contains three retainers sized for NS 29/32 joints, providing a reliable mechanical hold that helps keep joints seated during operation. The polyoxymethylene (POM) construction offers good dimensional stability and chemical resistance for typical laboratory solvent and distillation environments. Offered by manufacturer Rettberg, these retainers serve as dedicated joint clips or safeguards within distillation set-ups, reducing the risk of accidental disconnection of ground joints. The compact three-piece pack is convenient for equipping multiple joints on a single apparatus or for keeping spares on hand. With a low net weight of only 0,019 kg per pack, the retainers add negligible mass to glass assemblies while improving operational safety. They are intended solely as mechanical accessories and do not replace proper joint grease or sealing practices where required.
This article is part of Ground-joint glassware (other), in Distillation & extraction glassware.
Key features
- Pack size: 3 pc(s)
- Product type: Ground joint retainer
- Joint size: NS 29/32
- Material: POM
- Technical Information Sheet:
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Distillation & extraction glassware
Sub-category
Ground-joint glassware (other)
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Questions about Retaining device, size 29, POM, 3/pk, accessories for distillation apparatus
What is this article?
Retaining device, size 29, POM, 3/pk, accessories for distillation apparatus is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Ground-joint glassware (other), inside Distillation & extraction glassware, in Labware.
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 Distillation & extraction glassware. The sub-category is Ground-joint glassware (other). The catalogue is Labware.
Shelves beside this one are Distillation heads, adapters & columns, Condensers 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.