EPA Method 551.1 Performance Check Sol’n

2,4,4'-Trichlorobiphenyl, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 7012-37-5

L-Nicotine bitartrate dihydrate,neat,neat,250mg,

Bifenthrin, 100 µg/ml, Acetonitrile, 5ml