2,3-Dimethylphenol, 100 µg/ml, Acetonitrile, 5ml

N,N-dimethylperfluoro-1-octanesulfonamide , 1.2ml x 50ug/ml, methanol

4-Nonylphenol-di-ethoxylate, 50 µg/ml, Acetone,

4-Methyldibenzothiophene