Since 1990 technical assessor in the German Accreditation System Testing DAP,
Member of the working group quality management of EUROLAB-D,
Member of the sector committee building, fire prevention, sounds and vibrations of the DAP,
Member of committee 11, "Quality" of the German Ceramic Society,
Quality manager in the BMP laboratory for medical materials testing,
Consultation in the development of quality management systems as per DIN EN 45001 and DIN EN ISO 17025 .