Hassanizadeh SMLeijnse ARichardson-van der Poel MAUijt de Haag PAMWeerd H van de2012-12-122012-12-121993-10-31http://hdl.handle.net/10029/259150Abstract niet beschikbaarAs part of the phase 1-A program of OPLA, commission, RIVM has participated in the project "Validation of Models and International Research Activities". The project has consisted of participation in two international model validation studies: INTRAVAL (phase I and II) and BIOMOVS. The general aims of the project have been: - identifying and formulating appropriate modelvalidation strategies; - generating and/or increasing confidence in models ; - stimulating cooperation among modellers and experimentalists ; - exchange of ideas and experience in the area safety assessment studies. In this report, a brief description of various test cases of INTRAVAL and BIOMOVS studies will be given. Then, case-specific as well as general conclusions are discussed and recommendations are given.26 pnl20validatie modellenReport2012-12-12