EPA Method 548 Calibration Solution

D8-4,4'-DDD, 100 µg/ml, Acetone, 1ml

2,2',3,4,6,6'-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL,

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