Description
N 12 septum in virgin PTFE is a thin, chemically inert sealing disc for chromatography and sample-vial applications that demand high solvent resistance and low background contribution. The white virgin PTFE material is specified at 53° Shore D hardness with a septum thickness of 0,25 mm, providing a firm yet pierceable barrier suited to needle introduction in GC and related techniques. Packaged in units of 100 pieces, these N 12 septa are intended for use with matching screw or crimp closures where a pure PTFE liner is preferred over laminated elastomers. The inert fluoropolymer surface supports work with aggressive organic solvents and minimizes adsorption or extractable risk compared with rubber-based alternatives. From manufacturer Macherey-Nagel, the septa fit standard N 12 neck systems used in analytical sample preparation, storage and injection workflows. Clear hardness and thickness data allow laboratories to align the component with existing method requirements and instrument needle geometries without trial-and-error substitution.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Type: N 12 septum
- Material: virgin PTFE
- Colour: white
- Hardness: 53° Shore D
- EAN: 4046681087172
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Questions about Septa N12 PTFE w, 53°, 0.25
What is this article?
Septa N12 PTFE w, 53°, 0.25 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.
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.