Behenic acid, 100 µg/ml, Acetonitrile, 1ml

2,2',4,4',6,6'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Ibuprofen carboxylic acid, 10mg

2,3,4,7-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane