Octachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

2,2'-Dinitrobiphenyl, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 2436-96-6

n-Perfluoropentanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2706-90-3

EPA Method 551.1 Performance Check Sol’n