Description
Crimp cap ND20 with aluminium shell and Pharma-Fix septum 3,0 mm in butyl/PTFE is a specialised chromatography closure for reliable vial sealing. The colourless Pharma-Fix septum uses a shaped butyl/PTFE disc that is PTFE-coated only in the sample contact zone, while the butyl rubber meets the glass rim to deliver a very tight seal. This design offers a denser alternative to a fully PTFE-coated butyl sealing disc and supports consistent performance in routine analytical workflows. Temperature resistance spans −40 °C to 120 °C, making the closure suitable for a wide range of laboratory conditions. Supplied as a full tear-off aluminium crimp cap for ND20 neck finishes, it is intended for headspace and related vial applications where secure sealing and controlled sample contact matter. Pack size is 1000 pc(s). This product from manufacturer Altmann Analytik is positioned as a compatible alternative to corresponding closures from major chromatography brands. Ideal for laboratories seeking a practical ND20 Pharma-Fix solution with defined septum geometry and robust aluminium crimp construction.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 1000 pc(s)
- Neck finish: ND20
- Cap material: Aluminium
- Septum: Pharma-Fix butyl/PTFE, 3,0 mm
- Septum colour: Colourless
- Closure style: Full tear-off
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Questions about ND20 Al crimp seal Pharma-Fix-Sept. 3,0mm 1000/pac, 10 x 100 pc
What is this article?
ND20 Al crimp seal Pharma-Fix-Sept. 3,0mm 1000/pac, 10 x 100 pc 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?
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.