N-Nitrosodi-n-propylamine

2,3,3',4',5,5',6-Heptachloro-4-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

1H,1H,2H,2H-Perfluorooctane sulfonic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 27619-97-2

EPA Method 8240A Mix #2