Benzo(a)pyrene D12, 10µg/mL in Cyclohexane, 1ml

ISO 9377-2MOD Quality Control Standard of Base Oil EDC 95/11 4000µg/mL in acetone, 1x1mL, 5x1mL, 10x1mL

(S)-(-)-Cotinine, 1000µg/ml in MeOH, 1ml

2,3',4,5'-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL,