Description
Conical joint clamp POM purple NS 12/21 is a laboratory clamp engineered to secure standard taper ground-glass joints in chemical set-ups. Produced from polyoxymethylene (POM), the clamp offers excellent chemical resistance together with high mechanical strength for dependable laboratory service. Its flexible jaws create an absolutely leak-tight seal between two NS 12/21 connections, supporting safe operation during heating, stirring or vacuum work. Delivered as one piece, this purple clamp from manufacturer ISOLAB Laborgeräte allows fast fitting and removal while holding constant clamping force. The robust POM body retains shape and strength through repeated use cycles. NS 12/21 is a widely used intermediate joint size in preparative organic chemistry, analytical laboratories and educational glassware kits. A secure mechanical lock on conical joints lowers the chance of accidental separation and contributes to overall apparatus stability. Compact dimensions and durable polymer construction make the clamp a practical choice wherever reliable joint integrity and chemical durability are required in routine laboratory assemblies.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Material: POM (polyoxymethylene)
- Colour: purple
- Joint size: NS 12/21
- Design: flexible jaws for leak-tight seal
- EAN: 4250362636652
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Distillation & extraction glassware
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Distillation heads, adapters & columns
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Questions about clips for NS joints - POM - NS 12/21 - purple
What is this article?
clips for NS joints - POM - NS 12/21 - purple is the article on this page. Luminix Health distributes ISOLAB 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.
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.