4,4'-Dibromobenzophenone, 100 µg/ml, Acetonitrile

Aminomethyl phosphonic acid, 10µg in Water,1ml

Methidathion, 10.0 µg/ml, Acetonitrile, 10ml

Metformin-d6 hydrochloride (dimethyl-d6),100 µg/mL,MeOH,1mL,