Description
BM N20-L is an N 20 bimetal crimp cap in silver/blue with a centre hole, equipped with a light-grey butyl / dark-grey PTFE septum. The septum is specified at 50° Shore A hardness and 3 mm thickness, giving a firmer sealing layer suited to chromatography vial applications where butyl–PTFE combinations are preferred. Bimetal crimp construction enables a secure closure on standard N 20 necks, while the PTFE face provides the sample-contact surface and the butyl backing supports elasticity and reseal characteristics. Supplied in packs of 100 pieces, the caps serve as everyday laboratory consumables for sample sealing, storage and instrumental analysis. This configuration from manufacturer Macherey-Nagel is aimed at chromatography accessory use where defined hardness, septum thickness and colour-coded bimetal caps help maintain consistent handling and sealing behaviour across analytical series.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Cap type: N 20 bimetal crimp cap with hole
- Colour: Silver/blue
- Septum: Butyl light grey/PTFE dark grey
- Hardness: 50° shore A
- EAN: 4046681086205
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Questions about BM N20-H, si/bl, But lgr/PTFE dgr 50°, 3
What is this article?
BM N20-H, si/bl, But lgr/PTFE dgr 50°, 3 is the article on this page. Luminix Health distributes Macherey-Nagel 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.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. 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.
