Description
Blue screw caps for sample vials 9-425 with pre-perforated silicone/PTFE septum are polypropylene closures intended for vials that use the 9-425 thread. The pre-slit septum is already perforated to promote smooth needle passage and dependable injection behaviour in everyday laboratory practice. Colour coding in blue helps distinguish vial series or methods on the bench while the polypropylene shell and silicone/PTFE septum provide a secure seal for chromatography sample work. Packs of 100 pieces with a net weight of 0,030 kg supply a convenient quantity for continuous analytical throughput. These caps are suited to HPLC and related sample-introduction tasks where consistent septum performance matters. Available from manufacturer Labbox as part of the METRIA line, they sit within chromatography accessories and support both manual syringes and autosampler needles. Pre-perforation lowers initial puncture resistance and aids reproducible sample transfer, making the blue 9-425 closures a practical choice for laboratories that organise workflows by cap colour and thread type.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 100 pc(s)
- Material: polypropylene
- Thread: 9-425
- Septum: pre-perforated silicone/PTFE
- Colour: blue
- EAN: 8434868041158
- GTIN: 08434868041158
- Technical Information Sheet:
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Questions about Screw cap for 9-425 vials with white silicone/PTFE septa, blue, 100 pcs
What is this article?
Screw cap for 9-425 vials with white silicone/PTFE septa, blue, 100 pcs is the article on this page. Luminix Health distributes Labbox 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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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.