Diphenyl Oxalate, >98%, 25g

2,2',3,3',6-Pentachlorobiphenyl,100 µg/mL,isooctane,1mL,

cis-Permethrin, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 61949-76-6

EPA Method 502.2 Internal Standard