Metribuzin

2,3,3',4,4'-Pentachlorobiphenyl, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 32598-14-4

EPA Method 8260 - Surrogate Standard

Dibenzo[e,ghi]perylene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 190-95-4