2H-benzimidazole-2-thione, 1,3-di-hydro-4(or 5)-methyl

PCB Congeners (10 ppm)

3,3',4,5,5'-Pentachlorobiphenyl ,100 µg/mL,isooctane,1mL,

CMPU, 100 µg/ml, Acetone, 1ml