Parathion,100 µg/mL,cyclohexane,1mL,

2,2',3,4,4',5,6-Heptachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Sodium perfluoro-1-[2,3,4-13C3]butanesulfonate, 50µg/ml in MeOH, 1,2ml

2,3’,4,4’-Tetrachlorobiphenyl (66)