Isoprothiolane, 100 µg/ml, Acetonitrile, 5ml

Iohexol-d5, 1mg

Bromomethane, 2000µg/ml in MeOH, 1ml

2,2',3,3',5,5',6,6'-Octachloro-4,4'-dimethoxybiphenyl, 1.2ml x 50ug/ml, nonane