EPA Method 525.2 Standard

p-Xylene, certified, 1ml

2,2',3,4,4',5'-Hexachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 35065-28-2

Phthalic acid, butyloctyl ester, 250mg