2,6-Dimethylnaphthalene, 50 µg/mL in Toluene, 1ml

2,3,3',4',5,5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Ethanol standard in serum,0.3g/L,serum, 1.5mL

Stearyl stearate, 100mg