Addition to Norwegian Standard (NS 9815) 100µg/ml in toluene 0244.24 Dibenzo[a,e]pyrene 100µg/ml 0242.24 Dibenzo[a,h]pyrene 100µg/ml 0241.24 Dibenzo[a,i]pyrene 100µg/ml 0001.18 Triphenylene 100µ