The certification of the contents (mass fractions) of chlorobiphenyls iupac no 28, 101, 118, 153 and 180 in waste mineral oil, CRM 420 (low level) and chlorobiphenyls iupac no 28, 52, 101, 105, 118, 128, 153, 156, 170 and 180 in waste mineral oil, CRM 449 (high level)
Directorate-General For Research And Innovation European Commission Directorate-General For The Information Society And Media