Hafnium standard

Metolachlor, 100 µg/ml, Methanol, 1ml

3,3'-Dichlorobenzidine, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 91-94-1

Cathine hydrochloride, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 2153-98-2