EPA Method 502.2 Internal Standard

1,6-Pyrenequinone, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 17885-51-9

Cycloxydim, 100 µg/ml, Acetonitrile, 5ml

2,4',5-Trichloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane