Ethanol standard in serum,0.1g/L,serum, 3mL

2,2',3,3',4',5,6-Heptachloro-4-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

Fenthion, 100μg/mL in Acetonitrile, 1ml

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