Description
Caps for storage vials, ND18 are polypropylene (PP) closures fitted with a closed sealing pad in Butyl/PTFE for secure sealing of matching ND18 storage vials in the laboratory. The closed-top design with the Butyl/PTFE liner supports reliable sample containment during storage, handling and transfer of analytical samples. These caps belong to the ROTH SELECTION range and are intended for routine use with compatible storage vials in analytical and general laboratory workflows. Each pack contains 100 pc(s), giving a practical quantity for everyday bench and instrument work. The assembled unit weight is 0,170 kg per pack. The ND18 neck finish ensures dimensional compatibility with corresponding vials, while the polypropylene shell provides a robust, lightweight housing for the sealing pad. Butyl/PTFE as the liner combination is specified for the sealing face of these closed caps. Suitable for laboratories that standardise on ND18 storage vials and require matching closed PP caps with Butyl/PTFE pads in a convenient 100-piece pack.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Product type: Caps for storage vials
- Neck finish: ND18
- Material: PP
- Sealing pad: Butyl/PTFE, closed
- Weight: 0,170 kg
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Questions about Caps for storage vials, ND18, PP, sealing pad, closed, Butyl/PTFE, 100 unit(s)
What is this article?
Caps for storage vials, ND18, PP, sealing pad, closed, Butyl/PTFE, 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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.