Dr. Gunnar Kleist

Director Regulatory Affairs


Gunnar began his professional career in 1989 with a degree in Wood Science and Technology from the University of Hamburg, Germany. During his doctoral studies, he worked as an expert on fungal decay in timber at the Federal Research Centre for Forestry and Forest Products. In 1997, he was actively involved in an EU project to pave the way for the BPD approval of PT8 active substances and is therefore already familiar with the beginnings of European biocide legislation. After completing his PhD in Biology, he spent two years at Imperial College London/UK as a Marie Curie Fellow of the European Commission.

From 2001 onwards, Gunnar was head of the biological testing laboratory of a BASF subsidiary in the wood preservative industry in Sinzheim, Baden-Wuerttemberg, for six years and led it to accreditation. As a member of the German delegation to CEN TC38 in Paris, he was actively involved in the development of testing standards.

Back in Hamburg, Gunnar was responsible for regulatory affairs for biocidal products at a disinfectant manufacturer for eight years, during which time he was the company's representative on various external committees at international level. In 2015, he joined Knieler & Team GmbH in the field of chemical law consultancy, where he successfully obtained marketing authorisation and internationalisation of entire disinfectant portfolios under the BPR.

At the beginning of 2024, together with Florian Brill, he set up Dr. Brill Regulatory Services GmbH, an independent consultancy firm specialising in the authorisation of biocidal products and issues relating to medical devices.