Biocidal Products Directive 98/8/EC has established 10-year programme of work for the systematic examination of all active substances. Commission Regulations No. 1896/2000, 1687/2002 and 2032/2003 providing the details of implementation of the programme, setting of priorities and timetable for evaluation of active substances are presented. Consequences of inclusion of active substances into Annexes of Commission Regulation 2032/2003 are discussed.