Isoproturon, 100mg

O,O-Diethylthiophosphate-13C2, sodium salt, 100µg/ml in MeOH, 1ml

1,2-Benz[a]anthraquinone, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 2498-66-0

EPA Method 8260B Surrogate Standard