Description
Short thread cap ND9 PP, yellow, with a 1,0 mm silicone white/PTFE red UltraClean septum is a chromatography vial closure for ND9 short-thread sample vials. The yellow polypropylene screw cap is shaped in the style of a crimp cap, so it remains compatible with robotic gripper arms used in automated autosampler and sample-prep systems. The laminated UltraClean septum combines a soft silicone carrier for reliable needle penetration with a PTFE contact face that limits analyte interaction at the sample interface. Within this closure family, short-thread designs are offered in open and closed versions; pre-assembled options with slit or Y-cut (pre-cut) septa help avoid vacuum build-up in the vial during repeated injections and reduce concentration fluctuations that can occur when both layers are fully slit. This yellow ND9 short-thread cap from manufacturer Altmann Analytik is positioned as an alternative to corresponding closures from Chromacol, National Scientific, Wheaton, Finneran, SUN/SRI International, VWR and Labhut Cronus. Pack size is 1000 pc(s), supporting routine high-throughput sealing in analytical laboratories.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 1000 pc(s)
- Thread size: ND9 short thread
- Cap material: Polypropylene (PP)
- Cap colour: Yellow
- Septum: Silicone white/PTFE red UltraClean
- Septum thickness: 1,0 mm
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Questions about ND9 PP Short Thread Cap, yellow, 1,0mm
What is this article?
ND9 PP Short Thread Cap, yellow, 1,0mm is the article on this page. Luminix Health distributes Altmann Analytik 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?
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.