Description
Septum, 22 mm diameter, 3,2 mm thick in EPA quality with silicone white and PTFE beige facing is a dual-layer sealing disc for analytical sample vials. The soft silicone body supports smooth needle penetration while the PTFE contact layer provides a chemically resistant barrier toward the sample headspace, helping maintain integrity during chromatography and related vial-based workflows. With a defined 22 mm diameter and 3,2 mm thickness, the geometry fits common laboratory closures used in environmental and EPA-oriented methods. Pack size is 1000 pieces, suited to high-throughput sample preparation benches. Cross-reference data from manufacturer Altmann Analytik list this septum as an alternative to selected items from Agilent, Chromacol, National Scientific, Wheaton, SUN/SRI International and Labhut Cronus, supporting straightforward substitution planning. The white silicone and beige PTFE colour combination aids quick visual identification among mixed consumables. These septa serve routine labware needs where consistent dimensions, layered materials and pack economy are required for gas chromatography sample sealing and similar analytical applications.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 1000 pc(s)
- Diameter: 22 mm
- Thickness: 3,2 mm
- Material: Si white/PTFE beige
- Quality: EPA quality
- Construction: Dual-layer septum
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Questions about Septa, 22 mm diameter, 3,2 mm, EPA-quality, silicone white/PTFE beige
What is this article?
Septa, 22 mm diameter, 3,2 mm, EPA-quality, silicone white/PTFE beige is the article on this page. Luminix Health distributes Altmann Analytik 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.