Macherey-Nagel N 9 Screw Caps, Blue PP, Silicone/PTFE Septum, Pack of 100
Product overview
The Macherey-Nagel N 9 screw caps are designed for secure closure of compatible chromatography vials. Their centre-hole design and laminated septum support reliable needle access and sample containment in routine autosampler workflows.
Key Features:
- Brand: Macherey-Nagel
- Product Type: Chromatography Vial Screw Caps
- Cap Size: N 9
- Cap Material: Blue polypropylene
- Opening: Centre hole
- Septum: Beige silicone with white PTFE facing
- Hardness: 45° Shore A
- Pack Size: 100 caps
The cap size, septum construction and hardness should be matched to the vial, autosampler needle and solvent system. The PTFE face provides the sample-contact surface, while silicone supports resealing performance.
Frequently Asked Questions
1. What is the Macherey-Nagel N 9 Screw Caps, Blue PP, Silicone/PTFE Septum, Pack of 100 used for?
It is designed for sealing compatible N 9 chromatography vials for autosampler analysis. The PP cap and silicone/PTFE septum combine secure vial closure with a chemically resistant sample-contact surface.
2. Which vials are these screw caps intended to seal?
They are intended for compatible N 9 threaded chromatography vials. Vial thread, neck finish and autosampler requirements should be checked before use.
3. What materials are used in the cap and septum?
The cap is made from blue polypropylene, and the septum combines beige silicone with a white PTFE facing. The PTFE side is positioned toward the sample.
4. What is the septum hardness and pack quantity?
The septum has a hardness of 45° Shore A, and the product is supplied as a pack of 100 caps.
Product Specifications
- HS Code #39235010
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