2,3,3',5-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL,

4-Nitropyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 57835-92-4

Pirimiphos-ethyl, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 23505-41-1

EPA Method 607 - Nitrosamines