PCB No. 55, 100µg/ml in Isooctane, 1ml

d4 C27 alpha alpha alpha (20R)-Cholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 205529-74-4

13C6-Pentachlorophenol, 100 µg/ml, Cyclohexane,

EPA Method 525 - Perchlorinates