17 alpha(H),21ß(H)-(22S)-Homohopane, 50µg/mL in Isooctane, 1ml

Mass-Labelled PCB Solution , 1.2ml x 100ng/ml, nonane

4-Methoxy-3,5-dichlorobiphenyl,100µg/ml in IO, 1ml

Perfluorobutyric acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 375-22-4