4,4'-Diaminobiphenyl,1000 µg/mL,acetonitrile,1mL,

Custom mix of C13-C17 alkyl PAHs, 25 components each 2µg/mL in Toluene (Sigma quality 155004, ACS Spectrophotometric grade): Prepared gravimetrically by weighing components and solvent to a calculated 0,20mg/mL. This product has been diluted gravime

Di-n-butyl phthalate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 84-74-2

EPA Method 551.1 Standard