jrwb.de

Johannes Ranke, wissenschaftlicher Berater, is a one-person scientific consulting company. Services cover evaluation of degradation and bioaccumulation studies (OECD 307, 308, 309, 305 and 317), kinetic methods for deriving BCF/BAF values, and regulatory fate modelling such as PEC calculations for EU product registration. QSAR statements based on ECHA guidance and method development or critical reviews are also offered.

The company's work is aimed at clients who need degradation kinetics or environmental fate assessments for chemical and pesticide registration. The owner also develops the open-source R package mkin for kinetic evaluation of degradation data; version 1.0 was released after more than ten years of development.

The company is registered in Germany. The owner previously worked at the University of Bremen, Harlan Laboratories and Eurofins Regulatory AG, and has been a research associate at Agroscope in Wädenswil, Switzerland, since 2023 at about 80% employment, which limits capacity for consulting. The owner has refereed publications on nonlinear mixed-effects models for chemical degradation data.

Product: Consulting services in degradation kinetics evaluation, regulatory fate modelling, QSAR statements and method review; open-source R package mkin.