Phenol, 1000µg/ml in MeOH, 1ml

Perfluorooctanoic acid with branched isomers, 50µg/ml in MeOH, 1,2ml

Custom mix of C18-C22 alkyl PAHs, 23 components each 2µg/mL in Toluene (Sigma quality 155004, ACS Spectrophotometric grade)): Prepared gravimetrically by weighing components and solvent to a calculated 0,10mg/mL. This product has been diluted gravim

Gold (Au)