(±)-Ibuprofen-d3 (?-methyl-d3),1000 µg/mL,MeOH,1mL,

2,2',5,5'-Tetrachlorobenzidine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 15721-02-5

Sterigmatocystine, 50µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 10048-13-2

PCB No. 167, 100µg/ml in Isooctane, 1ml