2,3,4',5-Tetrachlorobiphenyl, 5mg

Malathion, 100 µg/ml, Ethyl acetate, 5ml

Dibenzo-p-dioxin, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 262-12-4

EPA Method 552,552.1,552.2 Internal Std