Description
Closed screw caps in polypropylene (PP) for ND8 neck finish provide a secure sealing option for autosampler vials and related sample bottles used in analytical laboratories. Each cap is supplied closed and fitted with a septum of natural rubber/TEF, 1,3 mm thickness, specified at 60°, supporting reliable needle penetration and resealing during chromatographic or routine sampling workflows. The PP construction offers a lightweight, chemically practical closure for everyday vial handling, storage and instrument queues. Packaged as 100 pc(s) with a pack weight of 0,060 kg, the format suits method development, QC sequences and multi-sample runs where consistent ND8 compatibility is essential. These closures form part of the ROTH SELECTION range and fit standard laboratory glass, vessels and consumables setups for autosampler vials. Use them wherever a closed PP screw cap with natural rubber/TEF septum is specified for ND8 systems, keeping septum geometry and hardness aligned with instrument and method requirements.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Product type: Closed screw cap
- Material: PP
- Neck finish: ND8
- Septum: Natural rubber/TEF, 1,3 mm, 60°
- Weight: 0,060 kg
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Questions about Screw cap, closed, PP, ND8, Sept. Natural rubber/TEF, 1.3 mm, 60°, 100 unit(s)
What is this article?
Screw cap, closed, PP, ND8, Sept. Natural rubber/TEF, 1.3 mm, 60°, 100 unit(s) 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.
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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.