Pyrene-d10, 1000µg/mL in acetonitrile, 1ml

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

Cortexolone, 100mg

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