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Regular Price: €112.77
Special Price €78.94
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Regular Price: €361.94
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Depending on the type of bottle used, the appropriate closure must be selected:
Fluorine-free septa are ideal for PFAS analysis or the analysis of fluorinated / halogenated organic compounds. Macherey-Nagel caps and septa suitable for PFAS analysis are made of PP or PE. They feature a polyimide coating instead of a PTFE lamination as a chemical resistant barrier on the silicone carrier material. This prevents the migration of fluorine into the sample. The silicone carrier material is of high analytical purity and easy to penetrate. In the snap ring closure, the septum is mounted in a soft snap ring cap which can be easily pressed onto the bottle or removed.
Also, for PFAS analysis vials made of polypropylene should be used: The adsorption effects are lower with plastic bottles than with glass bottles or even silanized glass bottles.