Description
Septum N9 silicone white/PTFE red is a dual-layer vial septum for analytical sample sealing, combining a white silicone body with a red PTFE facing. Hardness is specified at 45° Shore A with a septum thickness of 1,0 mm, giving a balance of resealing behaviour and controlled needle penetration for N9 screw-neck vials. The PTFE contact surface supports chemical resistance at the sample interface, while the silicone layer aids recovery after piercing in routine injection workflows. Packaged as 100 pieces per pack, the format suits chromatography, sample preparation and general laboratory vial systems that specify N9 closures. These septa from manufacturer Macherey-Nagel are intended as consumable accessories for laboratory instruments rather than sterile or certified medical devices. The 1,0 mm profile is practical for repeated handling on autosamplers and manual injectors where consistent fit and seal integrity matter. Clear material identification (silicone white/PTFE red) simplifies matching replacements to existing method SOPs and vial programmes in busy analytical laboratories.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Neck size: N9
- Material: Silicone white/PTFE red
- Hardness: 45° Shore A
- Thickness: 1,0 mm
- EAN: 4046681089398
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Questions about Septa N9 Sil w/PTFE r, 45°, 1.0
What is this article?
Septa N9 Sil w/PTFE r, 45°, 1.0 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.
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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.
