2,4-DB-2-ethylhexyl ester, 250mg

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

Ethanol standard in serum,3.0g/L,serum, 1.5mL

4-Bromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane