Carfentrazone (free acid), 100 µg/ml, Acetonitril

epsilon-HCH (BHC), 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 6108-10-7

Nitrite as NO2-

Metformin hydrochloride, 100 µg/ml, Methanol, 1m