Description
Septum N 20 silicone blue transparent/PTFE colourless is a dual-layer sealing septum designed for N 20 laboratory closures in analytical and sample-storage applications. The blue transparent silicone core is laminated with a colourless PTFE film on the sample side, combining elastic resealing behaviour with a chemically resistant contact surface for needle injection. Specified hardness is 45° Shore A and septum thickness is 3,0 mm, supporting uniform crimp performance and predictable penetration force on standard N 20 vials. Packaged as 100 pieces per unit, the septa are practical for continuous laboratory use where colour coding aids quick visual identification of the silicone grade. This item from manufacturer Macherey-Nagel suits workflows that require a clear PTFE barrier together with a distinctive blue-transparent silicone body. The colourless PTFE facing limits direct solvent contact with the elastomer, while the silicone layer restores seal integrity after piercing. Suitable for chromatography sample vials and related N 20 systems, the consistent 3,0 mm profile helps maintain reliable headspace or liquid sampling conditions across multi-sample sequences and instrument trays.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Product type: N 20 septum
- Septum material: Silicone blue transparent/PTFE colourless
- Hardness: 45° Shore A
- Septum thickness: 3,0 mm
- EAN: 4046681086502
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Questions about Septa N20 Sil bltr/PTFE, 45°, 3.0
What is this article?
Septa N20 Sil bltr/PTFE, 45°, 3.0 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. Delivery across Europe, two to five days when in stock. 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.
