Description
Screw cap for sample tubes 9-425 with septum of white silicone/red PTFE is a chromatography accessory for secure closure of compatible autosampler and sample vials. The caps are moulded from polypropylene and match the widely used 9-425 thread standard. A white silicone/red PTFE septum provides a reliable seal for sample integrity during storage, transport and instrumental analysis. On the pre-slit version the septum is pre-perforated to support smooth needle penetration and consistent injection performance in GC and HPLC workflows. Offered in a pack of 1000 pieces with a net weight of 0,300 kg, these closures from manufacturer Labbox suit high-throughput laboratories that need dependable vial sealing for routine chromatographic sample handling. The combination of polypropylene body and silicone/PTFE septum balances chemical resistance with resealing behaviour for analytical sample preparation and instrument queues.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 1000 pc(s)
- Type: Screw cap for 9-425 sample vials
- Septum: White silicone/red PTFE
- Cap material: Polypropylene
- Thread: 9-425
- EAN: 18434868105871
- Technical Information Sheet:
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Questions about Screw cap for 9-425 vials with white silicone/PTFE septa, red, 10x100 pcs
What is this article?
Screw cap for 9-425 vials with white silicone/PTFE septa, red, 10x100 pcs is the article on this page. Luminix Health distributes Labbox for laboratory use. It sits in Vial caps & septa, inside Vials, caps & septa, in Chromatographie.
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 Chromatographie.
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.