Description
Headspace caps with bore hole in aluminium for ND20 neck finish are intended for sealed headspace vials in gas chromatography and automated sampling. The aluminium shell includes a central bore hole that permits needle access through the septum after the cap has been crimped onto the vial. Each unit is equipped with a silicone/PTFE Agilent HT septum of 3,25 mm thickness, combining resilient silicone resealing with a PTFE barrier on the sample side for chemical resistance under headspace conditions. Supplied in packs of 100 pc(s) from manufacturer ROTH SELECTION, the caps support residual-solvent assays, volatile organic analyses and other GC headspace applications that rely on ND20 closures. The ND20 format aligns with standard headspace vials and laboratory crimping tools, promoting uniform seal quality across sample series. Aluminium provides the rigidity required for dependable crimping in busy analytical laboratories, while the Agilent HT septum specification addresses elevated-temperature headspace work. Approximate pack weight is 0,170 kg. These consumables fit established ND20 vial platforms and autosampler methods without modification of existing workflows.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Product type: Headspace caps with bore hole
- Material: Aluminium (Al)
- Neck finish: ND20
- Septum: Silicone/PTFE Agilent HT
- Septum thickness: 3,25 mm
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Questions about Headspace-caps with bore hole, Al, ND20, Septum Silic./PTFE AGILENT HT, 3,25mm
What is this article?
Headspace-caps with bore hole, Al, ND20, Septum Silic./PTFE AGILENT HT, 3,25mm 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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.