This percentage was multiplied by the estimated weight of a child (7,5 kg), and divided by the estimated quantity of toy material ingested (8 mg/kg for scraped-off materials).
See protsendimäär korrutati lapse arvestusliku kaaluga (7,5 kg) ja jagati organismi sattunud mänguasjamaterjali arvestusliku kogusega (mahakraabitud materjalide puhul 8 mg/kg).