Navigating the new PFAS test method EN 17681 -1:2025

Mario developed a deep connection to nature early in life, spending much of his time outdoors skiing, fishing and exploring, an experience that would later shape his professional focus.

Trained as a chemical engineer at ETH Zurich, where he completed his doctoral research, Mario began critically examining the environmental footprint of conventional waterproof membranes, including their reliance on PFAS and fossil-based materials. This work led to the invention of dimpora’s patented CoreLayer™ technology and the founding of Dimpora AG, a high-performance membrane platform designed to enable PFAS-free, solvent-free, bio-based and circular material solutions for the textile industry.

Stefan Posner is a polymer and textile chemist with over 35 years of experience in research on chemicals in textiles and polymeric materials in collaboration with international companies, international and national authorities and academia.
Stefan has been working for many years with legal preparatory work regarding chemicals for the UNEP Stockholm Convention, the EU Commission and several national authorities and is deeply involved in research to replace dangerous chemicals with possible and technically functional low-toxic alternatives.