Description
Screw caps with bore hole in polypropylene (PP), ND8, are precision closures for autosampler vials and related sample bottles used in analytical and routine laboratory workflows. Each cap is fitted with a silicone/PTFE UltraClean septum measuring 1,5 mm at 55°, giving a reliable sealing surface for needle penetration while limiting analyte interaction at the contact layer. The open-centre design supports repeated sampling on chromatography systems and other automated platforms that require consistent access to the vial contents. Supplied in packs of 100 pc(s) from manufacturer ROTH SELECTION, the set is intended for laboratories that standardise on ND8 neck finishes and need a matched cap–septum combination for sample integrity during storage and injection. Lightweight construction (approximately 0,052 kg per pack) keeps handling straightforward in high-throughput environments. These screw caps belong to the autosampler vial consumables range and suit chromatography, quality-control and general sample-preparation applications where a defined silicone/PTFE UltraClean barrier is specified. Use with compatible ND8 vials to maintain a secure, reproducible seal throughout the analytical sequence.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Material: PP (polypropylene)
- Neck finish: ND8
- Design: Screw cap with bore hole
- Septum: Silicone/PTFE UltraClean, 1,5 mm, 55°
- Weight: 0,052 kg
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Questions about Screw caps with bore hole, PP, ND8, Septum Silic./PFTE UltraCl., 1.5 mm 55°
What is this article?
Screw caps with bore hole, PP, ND8, Septum Silic./PFTE UltraCl., 1.5 mm 55° 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.