EPA Method 8032 Internal Standard

Ethyl sulfate-d5 sodium salt,1000 µg ethyl sulfate/mL,MeOH,1mL,

Atrazin, 100μg/ml in Acetonitrile, 5ml

Dinaphtho[2,3-b;2',3'-d]furan, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 242-51-3