Description
SK N9-L is a yellow polypropylene screw cap for N 9 threads, equipped with a white silicone / blue PTFE septum that is pre-slit for controlled needle access. The liner has a hardness of 55° shore A and a septum thickness of 1,0 mm, supporting dependable resealing during chromatographic sampling and routine analytical work. An open-hole design allows direct penetration while the dual-layer construction combines PTFE chemical resistance with the elasticity of silicone. Packs contain 100 pieces and are offered by manufacturer Macherey-Nagel for laboratories that need consistent N 9 closures across GC and HPLC workflows. Yellow colour coding aids quick visual sorting of sample series on the bench or in autosamplers. The pre-slit geometry helps reduce coring and supports repeated injections when solvents or aqueous matrices are handled under standard laboratory conditions. These caps fit conventional N 9 screw-thread vials and provide a practical sealing option for high-throughput sample preparation, method development, and everyday quality-control sequences where clean, reproducible access to the vial contents is essential.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Cap type: N 9 PP screw cap, open hole
- Colour: Yellow
- Septum: Silicone white/PTFE blue, pre-slit
- Hardness: 55° shore A
- EAN: 4046681088704
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about SC N9-H, yw, Sil w/PTFE bl, (-) 55°,1.0
What is this article?
SC N9-H, yw, Sil w/PTFE bl, (-) 55°,1.0 is the article on this page. Luminix Health distributes Macherey-Nagel for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Labware.
A screw cap has a thread and a liner. The thread has to match the bottle. The liner has to survive the liquid: a pulp liner fails in a solvent that a PTFE-faced liner ignores. The colour of the cap is not the specification.
A closure is the part that decides whether a bottle stays shut and whether the contents attack the seal. A ground-glass stopper matches a ground neck. A screw cap needs the right thread and a liner that survives the liquid. Rubber and silicone stoppers push into a mouth. The liner, not the colour of the cap, is the chemical choice. The vessels they close are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stoppers, caps & closures. The sub-category is Screw caps & closures. The catalogue is Labware.
Shelves beside this one are Rubber & silicone stoppers, Ground-joint glass stoppers, Lids & seals and Closures (other).
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. 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.