Kathrin studied Chemistry (Diploma) in Germany at the Ulm University and earned her PhD in the field of Bioinorganic Chemistry at the LMU Munich in 2009.

Also in 2009, she started working as an R&D Manager for Merck KGaA in Darmstadt in the fields of rapid test kit development for photometry, Certified Reference Materials and laboratory accreditation.

Since 2016, Kathrin Breitruck serves as the accreditation specialist for the R&D of Sigma-Aldrich Production GmbH (a subsidiary of Merck KGaA, Darmstadt, Germany) in Switzerland, focusing on the development of new Certified Reference Materials & Proficiency Testing products and on maintaining and expanding the accreditation scopes according to ISO/IEC 17025 and ISO 17034.

She also has been the convenor of a working group at ISO/TC 334 “Reference Materials” since 2021.