Benzylalcohol, 100 µg/ml, Methanol, 5ml

Diltiazem hydrochloride,1000 µg base/mL,acetonitrile,1mL,

ß-Glucuronidase from overexpressing recombinant E. coli ,>50,000 u/ml,50% aqueous glycerol soln,5mL

Total Iron (Fe II and Fe III)