Description
CenterGuide Marathon Septa N 11 are gas chromatography septa intended for reliable injector sealing in GC systems. Each disc has an outer diameter of 11 mm and a thickness of 3 mm, and the Marathon grade is specified for continuous use at temperatures up to 400 °C. The CenterGuide geometry supports controlled needle entry, helping maintain consistent sample introduction during routine and high-throughput analyses. Packed as 25 pieces in a blister pack, the septa stay protected until needed and are easy to dispense at the bench. These GC septa from manufacturer Macherey-Nagel suit analytical chemistry, quality control, and research laboratories that require durable high-temperature sealing components in the N 11 format. They are used wherever thermal stability and mechanical integrity of the septum are important for leak-free operation and reproducible injections. The compact blister presentation simplifies inventory handling without excess bulk, making this pack a practical consumable choice for ongoing chromatographic workflows that specify Marathon N 11 septa.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 25 pc(s)
- Product type: GC septa
- Outer diameter: 11 mm
- Thickness: 3 mm
- Maximum temperature: 400 °C
- EAN: 4046681086854
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Questions about CenterGuide Marathon Septa N 11
What is this article?
CenterGuide Marathon Septa N 11 is the article on this page. Luminix Health distributes Macherey-Nagel for laboratory use. It sits in Vial caps & septa, inside Vials, caps & septa, in Chromatography equipment.
A vial cap and a septum have to match the vial neck: crimp, screw or snap, and the diameter. The septum material, PTFE/silicone or rubber, decides chemical resistance and how many times a needle can pierce it. A septum that sheds into the solvent becomes ghost peaks.
An autosampler vial is the small closed bottle a chromatograph picks up. The neck is crimp, screw or snap, and the cap and the septum have to be that neck. The septum is the part the needle pierces. A soft septum reseals. A septum that is wrong for the solvent swells or sheds particles into the sample. Inserts reduce the volume when the sample is scarce. The separation they feed is described with IUPAC names and PubChem data.
Which category should I open next?
The category is Vials, caps & septa. The sub-category is Vial caps & septa. The catalogue is Chromatography equipment.
Shelves beside this one are Chromatography accessories, Autosampler vials, Crimpers & decappers and Vial inserts.
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.