PCB Congeners & Hexachlorobenzene Mix #4

2-(4-Carboxyphenyl)-1H-benzimidazole, neat, Solvent-neat, Unit 10MG, # of units-20, Cas.no. 66631-29-6

Tolchlophos-methyl,100 µg/mL,MeOH,1mL,

Trifloxysulfuron sodium salt, 100mg