Description
Pre-sealed N 13 screw neck vials 4 mL with black PP screw caps provide a convenient ready-to-use format for laboratory sample preparation and short-term storage. The clear glass vial (702962) features a flat bottom, outer diameter of 14,75 mm and outer height of 45 mm, matching common N 13 screw-thread dimensions. Each bottle is factory-closed with the N 13 polypropylene screw cap (702926) in black, fitted with a centre hole and a silicone white/PTFE red septum. Septum hardness is 40° Shore A and thickness is 1,3 mm, offering a secure closure for everyday analytical tasks. Available in packs of 100 pieces from manufacturer Macherey-Nagel, the pre-screwed assemblies save preparation time and support reproducible sealing at the bench. Clear glass construction enables straightforward inspection of contents, and the screw-thread design allows repeated opening when protocols require access between steps. These pre-sealed units are intended for laboratories that standardise on N 13 screw neck vials and prefer caps with silicone/PTFE septa already installed for immediate use.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pcs
- Vial: 4 mL N 13 screw neck, clear, flat bottom
- Outer diameter: 14,75 mm
- Outer height: 45 mm
- Cap: N 13 PP screw cap, black, centre hole
- EAN: 4046681136351
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Questions about Pre-sealed: 702962 + 702926
What is this article?
Pre-sealed: 702962 + 702926 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.
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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. 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.