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Breton Registration & Toxicology

BReTox is your contact for questions relating to the registration and toxicology of chemicals, in particular plant protection products and biocides. BReTox has been founded by Christel Breton-Verberk in 2014. With over 20 years of experience in regulatory consultancy, she is a reliable, flexible and efficient choice to assist you in the complete process of registration.

BReTox services include:

  • Feasibility studies
  • Preparation of application forms and packages
  • Preparation of dossier summaries in required formats
  • Human hazard, exposure and risk assessments
  • Assistance with preparation of dossier content, including preparation of expert statements
  • Assistance with post-submission support, i.e. addressing questions from competent authorities after submission of the dossier, during the evaluation of the authorities

BReTox has over 20 years experience with applications to the Dutch competent authority (Ctgb) and knows the details of the so-called ‘overgangsrecht’ for biocides.

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Plant protection products

BReTox can advise you on the procedures of plant protection products and assist you with the preparation of the product dossiers.

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For existing and new products on national and EU level

BReTox offers the full package for creating a dossier, and is working together with other toxicologists plus experts on environmental toxicity and environmental exposure and risk assessment as well.


  • M.Sc. Environmental Health Sciences, University of Maastricht
  • Propaeduse Dutch Law plus environmental law modules, University of Maastricht
  • Postgraduate Education in Toxicology

Christel’s expertise is with:

Human toxicology
Regulatory support
Human exposure and risk assessment