WHO PCB Extraction Standard, 100pg/µl in nonane, 1,2ml

Benzo[a]pyrene, 10µg/mL, Solvent-acetonotrile, Unit 1mL, # of units-1, Cas.no. 50-32-8

ICP HM Check Std A

2,2’,4,4’,5,5’-Hexachlorobiphenyl (153)