Description
Screw cap ND8 in polypropylene (PP), without septum, black, closed top, with 8-425 thread, is a solid laboratory closure for ND8 screw-neck vials when an open centre hole is not required. Because the cap is supplied without a septum, it does not form a sealed system on its own; a matching septum must be ordered separately if a gas- or liquid-tight barrier is needed for storage or analysis. The closed black PP design and 8-425 short thread suit standard ND8 vial formats used in sample preparation, storage and general laboratory handling. From manufacturer Altmann Analytik, this closed screw cap serves as an alternative to comparable closed ND8 PP caps offered by other chromatography consumable brands. Supplied in packs of 1000 pieces, it is practical for laboratories that stock closed screw closures separately from septa and configure each vial according to method requirements. The product supports routine analytical and quality-control environments that rely on ND8 PP screw-thread systems and prefer modular selection of caps and septa rather than pre-assembled combinations.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1000 pc(s)
- Product type: ND8 screw cap without septum
- Material: Polypropylene (PP)
- Colour: Black
- Top style: Closed
- Thread: 8-425
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Questions about ND8 PP Screw Cap, black, closed, 10x100/PAK
What is this article?
ND8 PP Screw Cap, black, closed, 10x100/PAK is the article on this page. Luminix Health distributes Altmann Analytik 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.