Perfluoro-n-tetradecanoic acid, 1.2ml x 50ug/ml, methanol

17 alpha(H),21 alpha(H)-30-Norhopane, 50µg/mL in Isooctane, 1ml

PCB No. 118, 100µg/mL in Isooctane, 2ml

3-Nitrobenzanthrone, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 17117-34-9