Description
Short thread cap ND9 in green polypropylene with a 1,0 mm PTFE red/silicone white/PTFE red septum is intended for secure sealing of analytical vials in chromatography and related laboratory work. The laminated septum combines PTFE outer layers with a soft silicone core, giving a chemically resistant sample contact surface and reliable needle penetration. Synthetic constructions of this kind offer a cost-effective match to instrument-manufacturer quality; unlike natural rubber they are not designed for repeated multiple injections, yet remain soft enough for safe piercing. The short-thread screw profile follows a crimp-cap design, so the closure can be handled by robotic gripper arms in automated systems. Mounted short-thread options with slit septa and pre-cut (Y-slit) silicone carriers that leave the PTFE laminate intact help reduce vacuum formation and concentration fluctuations during sampling. Supplied in a 1000-piece pack from manufacturer Altmann Analytik, this green ND9 cap with 1,0 mm PTFE/silicone/PTFE septum supports routine sample preparation and instrumental analysis where consistent sealing and automation compatibility are required.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 1000 pc(s)
- Product type: Short thread cap
- Thread size: ND9
- Cap material: Polypropylene (PP)
- Cap colour: Green
- Septum thickness: 1,0 mm
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Questions about ND9 PP Short Thread Cap, green, 1,0mm
What is this article?
ND9 PP Short Thread Cap, green, 1,0mm 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.