Description
neochrom® short-thread screw cap ND9 is a black polypropylene closure with short thread 9-425 and a 6 mm centre hole, fitted with a natural rubber/TEF septum for chromatography sample vials. The septum thickness is 1,0 mm, and the red-orange/TEF combination is intended to support reliable sealing during injection. Temperature resistance spans −40 °C to +120 °C, making the cap suitable for typical GC and HPLC sample handling conditions within that interval. Good resealing behaviour supports multiple injections on the same vial, which is why this design is described as a standard closure for GC and HPLC workflows. Supplied in packs of 100 pieces from manufacturer neolab - Labor, the neochrom® ND9 short-thread screw cap provides a practical vial closure option for laboratories that need a pierced PP cap with natural rubber/TEF septum. The black PP shell with short thread matches common ND9 vial formats, while the 6 mm hole accommodates autosampler needles. Use this closure wherever ND9 short-thread vials require a durable, resealable septum arrangement for routine chromatographic sample introduction.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Product type: Short-thread screw cap ND9
- Material: PP black with hole 6 mm
- Septum: Natural rubber/TEF, 1,0 mm
- Thread: Short thread 9-425
- EAN: 4058072029555
- Technical Information Sheet:
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Questions about neochrom® short-thread screw cap ND9, PP black with hole
What is this article?
neochrom® short-thread screw cap ND9, PP black with hole is the article on this page. Luminix Health distributes neolab 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.
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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.