EPA Method 525.2 Pesticide Level 1

D5-Propachlor ESA sodium salt, 100µg/ml in Acetonitrile, 1ml

N-Nitrosodiethylamine-d10, 5mg

2,2',6,6'-Tetrachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane