Desmedipham, 250mg

2,3',4',5,5'-Pentachlorobiphenyl (= 2',3,4,5,5'-),100 µg/mL,isooctane,1mL,

3-Methoxy-2',5'-dichlorobiphenyl, 100µg/ml in IO, 1ml

EPA Method 500 Series Internal Standard #5