Parathion-methyl, 100 µg/ml, Ethyl acetate, 5ml

2,2’,3,4,4’,5’-Hexachlorobiphenyl (138)

Diisobutyl phthalate-3,4,5,6-d4,1000 µg/mL,isooctane,1mL,

Dibenzo[g,p]chrysene, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 191-68-4