Description
Screw cap, closed, PP, ND9 is a closed polypropylene screw closure for ND9 autosampler vials and sample bottles. It combines a PP shell with a silicone/PTFE septum of 1,0 mm thickness and 55° hardness, giving a PTFE-faced sealing surface for analytical sample handling. The closed design fully covers the septum and supports secure closure of ND9 neck finishes used in chromatography and routine laboratory sample work. Each pack contains 100 pc(s) and has a weight of 0,040 kg, which is convenient for bench stock and instrument-side consumable supply. These caps belong to the ROTH SELECTION range and fit laboratories that standardise on ND9 geometry for autosampler vials and related vessels. They sit within labware workflows covering laboratory glass, vessels and consumables, where a closed screw cap with Silic./PTFE septum is specified. Pair the closures with matching ND9 vials when a resealable, fully covered septum is required for liquid samples in HPLC, GC or general sample-bottle applications.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Product type: Closed screw cap ND9
- Material: Polypropylene (PP)
- Septum: Silicone/PTFE
- Septum thickness: 1,0 mm
- Hardness: 55°
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Questions about Screw cap, closed, PP, ND9, Sept. Silic./PTFE, 1.0 mm, 55°, 100 unit(s)
What is this article?
Screw cap, closed, PP, ND9, Sept. Silic./PTFE, 1.0 mm, 55°, 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.