1,2,4,5-Tetrachlorobenzene, 250mg

1-Fluoronaphthalene, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 321-38-0

2,4-Dicofol, 10.0 µg/ml, Isooctane, 1ml

EPA Method 551.1 Internal Standard