Worker, Operator, Bystander and Resident Exposure and Risk Assessment

For all those dealing with operator, resident, bystander and worker exposure risk assessment of pesticides, this conference is the place to be. Do you have to implement 2022 EFSA OPEX Guidance updates? Are you interested in dermal absorption? Do you deal with risk mitigation measures? Are you facing trends in application techniques? Then join us!

11.02. — 12.02.2025
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This popular Akademie Fresenius Conference "Worker, Operator, Bystander and Resident Exposure Risk Assessment" will be of great interest to you. It is the place to be to receive all the latest updates, to meet your peers and to join important discussions in a comfortable conference atmosphere. Reason enough for many participants to attend regularly. So don’t miss out to secure your place for the event!

You can also follow all the exciting contributions in Dusseldorf! Please find further information on the on-site conference here.


The EFSA OPEX Guidance/Calculator

  • Update on the OPEX project (planning and status) and update for the technical part (e.g. if any change to the online tool will be implemented in the meantime)
  • EU Member State experience with the implementation of the EFSA OPEX Guidance/Calculator
  • Industries' feedback

Bystander/resident safety

  • Exposure study comparing drift exposure to bystanders at different distances during soil, field crop and orchard crop drone application
  • How ordinary clothing protects bystanders and residents against pesticide spray drift?

DFR/TC/DT50 and worker safety

  • Re-entry in hops – insights into the project and potential outcome
  • Results on dislodgeable foliar residues (DFR) meta-analysis

Ongoing activities outside Europe

  • Update from the US
  • Update from ANVISA
  • ProHuma's technical projects to support the occupational exposure risk assessment

Operator safety

  • Outcome of the ICPPE (International Center for PPE for Pesticide Operators and Re-entry Workers) International Symposium: A collaborative approach to improve pesticide operator safety
  • Activities in data generation for drone application

Dermal absorption of active substances in PPP

  • Practical guidance to evaluate in vitro dermal absorption studies for pesticide registration and a new conceptional model for deriving average dermal absorption estimates from studies with multiple tested concentrations for non-dietary risk assessment of pesticides

Who should attend this conference?

Professionals working in the fields of:

  • Human exposure & risk assessment
  • Research & development
  • Toxicology
  • Registration
  • Marketing & distribution
  • Product stewardship & responsible care
  • Human/Consumer safety – crop protection

Sectors that should take part:

  • Agrochemical industry
  • Professional associations
  • Consultancies

Picture Credits: © lala Firdaa – AdobeStock, © Ron – AdobeStock



We are currently in the process of compiling our event programme in close cooperation with our team of experienced speakers.

Subscribe to our Newsletter now, so we can update you on this conference well in advance. Simply click on the Request updates button.





Neil A. Byron

Exponent International, UK

Neil A. Byron, is working as a Senior Managing Scientist in Exponent UK’s Health Sciences Center for Chemical Regulation and Food Safety. Prior to joining Exponent he was with the UK’s CRD for 18 years. He is a human exposure assessment specialist, having over 25 years of experience in exposure and risk assessment of PPP and is currently involved with the industry’s SeedTropex task Force who are developing a new exposure model for seed treatment.  


Agathi Charistou

Benaki Phytopathological Institute, Greece

Agathi Charistou is a Regulatory Toxicologist in the Laboratory of Toxicological Control of Pesticides at the Benaki Phytopathological Institute in Greece with long experience in the evaluation of mammalian toxicology studies and non-dietary exposure assessment to both plant protection products and biocides.


Arianna Chiusolo

European Food Safety Authority (EFSA), Italy

Edgars Felkers

Bayer Crop Science Division, Germany

Edgars Felkers is an occupational and residential safety expert at Bayer Crop Science Division in Germany. He is responsible for non-dietary human exposure and risk assessments of plant protection products. Currently, he is also chairing CropLife Europe Occupational and Bystander Technical SubGroup (CLE OBE TSG).


Alistair Morriss

Corterva Agriscience, UK

Alistair Morriss is a Global Human Health Risk Assessor at Corteva Agriscience in the UK. Prior to joining Corteva in 2023 he has been a Principal Consultant specialising in OPEX at Blue Frog Scientific based in the UK for 4 years and a Human Health Risk Assessor at Dow AgroSciences (now Corteva) for 8 years. Before joining Corteva and Blue Frog Scientific he worked in contract research organisations for 8 years.


Anugrah Shaw

University of Maryland Eastern Shore, USA

Anugrah Shaw is a Professor at the University of Maryland Eastern Shore and has conducted research on protective clothing for pesticide applicators for three decades. She also serves as Director, International Center for PPE for Pesticide Operators and Re-entry Workers. Anugrah has provided leadership for the development of international standards on protective clothing for pesticide operators and is currently coordinating international initiatives on operator safety.


Brian Van Deusen

U.S. Environmental Protection Agency (EPA), USA


Live Stream
On-site conference is going to be streamed live.
You can reach us directly at:
Phone : +49 231 75896-50

Prices & Services

Participation Fee: € 1,195.00 plus VAT.

The registration fee includes the following benefits:

  • Participation in the Online Event
  • Event Documentation (available via download from our website)
  • Certificate of attendance

Representatives of an authority or a public university are therefore eligible for a reduced fee of € 695.00 plus VAT per person (please provide evidence). The reduced fee cannot be combined with other rebates.

Group Reductions
For joint bookings received from one company we grant a 15% discount from the third participant onwards.

Terms of Cancellation / Book without Risk
You can cancel your participation in our online events free of charge and without giving reasons in writing up to 1 week before the start of the event. In the case of later cancellations and non-login to the online event, no participation fees can be refunded.
In this case, however, you will receive access to the documentation after the event.
You can name a substitute participant free of charge at any time.

Event Documentation

Would you have liked to attend this event, but cannot spare the time?

For the price of 295,00 € plus VAT you can order a complete set of event documentation. A few days after the event you will receive the access data for the restricted download section of our Website. There you will find all presentations (subject to the approval of our speakers) as pdf-files.

Order documentation

Sabine Mummenbrauer

Your Contact

Sabine Mummenbrauer
Programme and conceptual design

+49 231 75896-82

Sabine Mummenbrauer

Your Contact

Sabine Mummenbrauer
Programme and conceptual design

+49 231 75896-82

Sabine Mummenbrauer

Your Contact

Sabine Mummenbrauer
Programme and conceptual design

+49 231 75896-82

Danielle Sörries

Your Contact

Danielle Sörries
Organisation and participant management

+49 231 75896-74

Danielle Sörries

Your Contact

Danielle Sörries
Organisation and participant management

+49 231 75896-74

Display / Supplement

Present your Company at the Event.

You can personally present your products and services directly to your specified target group. We are happy to provide you with further information on our range of available options – from displaying company information at the reception counter to presenting your company with an exhibition stand.

We would be pleased to assist you personally:

Monika Stratmann

Monika Stratmann
Phone: +49 231 75896-48

Press Contact

We offer journalists and editors a platform where they can get in touch with the experts.

If you are the editor of a specialist publication and interested in a press pass or media partnership, please contact us well in advance. We are happy to advise you.

Please contact us:

Katharina Geraridis

Katharina Geraridis
Phone: +49 231 75896-67