Headspace screw neck vials N 18
The N18 magnetic closure has a thinner septum (1.5 mm vs 3 mm), allowing easier needle penetration and less septum coring, which is particularly important for SPME (Solid Phase Micro Extraction). Its flat magnet surface prevents full vials from detaching during extraction—a common issue with crimped vials due to convex cap tops.
Available in clear or amber glass to protect light-sensitive samples, these vials are compatible with a wide range of autosamplers and automated systems, offering a reliable and efficient solution for laboratories requiring accuracy and safety in Headspace analysis.
Macherey-Nagel offers screw neck vials specifically designed for Headspace applications, featuring a magnetic N18 closure that ensures a more convenient, consistent, and secure sealing process compared to traditional crimped closures. These vials are made of hydrolytic class I borosilicate glass, ensuring high chemical resistance and thermal stability—essential for precise GC Headspace analyses.
The N18 magnetic closure has a thinner septum (1.5 mm vs 3 mm), allowing easier needle penetration and less septum coring, which is particularly important for SPME (Solid Phase Micro Extraction). Its flat magnet surface prevents full vials from detaching during extraction—a common issue with crimped vials due to convex cap tops.
Available in clear or amber glass to protect light-sensitive samples, these vials are compatible with a wide range of autosamplers and automated systems, offering a reliable and efficient solution for laboratories requiring accuracy and safety in Headspace analysis.
Crimp neck vials for N18 caps
10 Colour
Clear Bottom
Round Write spot
No Pack (u.)
100
10 Colour
Amber Bottom
Round Write spot
No Pack (u.)
100
20 Colour
Clear Bottom
Round Write spot
No Pack (u.)
100
20 Colour
Clear Bottom
Round Write spot
Yes Pack (u.)
100
20 Colour
Amber Bottom
Round Write spot
No Pack (u.)
100
Caps for N18 vials
Magnetic silver Septa
Silicone blue transparent / PTFE white Thickness (mm)
1.5 Pack (u.)
100
Magnetic silver Septa
Silicone white / PTFE blue Thickness (mm)
1.5 Pack (u.)
100
Magnetic silver Septa
Silicone white / PTFE blue, preslit Thickness (mm)
1.5 Pack (u.)
100
Magnetic silver Septa
Butyl red / PTFE grey Thickness (mm)
1.5 Pack (u.)
100
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