Perfluoro-n-[1,2-13C2]hexanoic acid, 50µg/ml in MeOH, 1,2ml

EPA Method 1613 Calibration Kit, 5 ampoules, nonane

n-Butyl 4-hydroxybenzoate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 94-26-8

2,4'-Dichloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane