Heptachlor, 100 µg/ml, Ethyl acetate, 1ml

2,2',4,4',6,6'-Hexabromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 59261-08-4

1-Nitropyrene-d9, 100µg/ml in Toluene, 1ml

EPA Method 525 Surrogate Standard