Tetra-n-butyltin, 1000 µg/ml, Methanol, 5ml

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

25-Hydroxyvitamin D3, 100µg/ml in MeOH, 1ml

EPH Aromatic Hydrocarbons