Description
Screw caps, closed, PP, ND24 combine a polypropylene shell with an integrated silicone/PTFE septum rated EPA-quality for laboratory autosampler vials. The closed design and ND24 neck finish suit standardised sample bottles used in chromatographic and environmental analytical sequences. Each septum measures 3,2 mm in thickness at 45° hardness, offering a thicker sealing layer for vial closure applications that specify this geometry. Silicone with a PTFE facing separates the elastomeric body from the sample-side surface, a configuration commonly selected for autosampler consumables. Packed as 100 pc(s) from manufacturer ROTH SELECTION, the unit weighs 0,335 kg and supports routine replenishment of vial accessory stocks. These caps arrive ready assembled, so operators can close ND24 vials without handling loose septa. They fit laboratory glass, vessels, and consumable workflows focused on autosampler vials and sample bottles. Specify them when closed PP ND24 caps with silicone/PTFE EPA-quality septa at 3,2 mm and 45° are required for consistent sample preparation lines.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Cap material: PP
- Cap type: Closed screw cap
- Neck finish: ND24
- Septum: Silicone/PTFE EPA-quality
- Septum thickness: 3,2 mm
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Questions about Screw caps, closed, PP, ND24, Septum Silic./PFTE EPA-qual., 3,2mm 45°
What is this article?
Screw caps, closed, PP, ND24, Septum Silic./PFTE EPA-qual., 3,2mm 45° is the article on this page. Luminix Health distributes Carl Roth 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.