DFR Studies, an easy tool to refine worker re-entry exposure

Join us for a short webinar!
Thursday 12 March 2020 14:00 GMT / 15:00 CET (40 minutes).

Free registration here


Dislodgeable Foliar Residues represent a key information used to refine the worker exposure assessment. The studies set up to obtain these data help to refine the default values used for exposure calculation. DFR studies provide a precise determination of the initial value after application and its decrease over time.

The studies are conducted under GLP compliance. Setting up a Study Plan is rather complex when guidelines are not specifically designed for these studies. The Study Plans are currently based on different guidelines and offer different approaches. 

This webinar presents the options generally followed by Staphyt to conduct these studies with some recommendations in terms of:

  • number of trial situations
  • sampling methodology
  • field fortification
  • analytical verification and validation or results
  • calculations and reporting.

This webinar is a presentation of Staphyt expertise. We are looking forward to sharing with you the way we carry out DFR studies and the importance of the data generated.

Speaker: Charles-Henry ROUSSEL (Senior Study Director)
Charles-Henry has been acting as Study Director for residue studies for more than 16 years. Since 2009, he has developed Dislodgeable Foliar Residue studies on many different crops, in different situations in many EU countries. Above all, he likes sharing new skills and extending his knowledge and experiences.