D-Xylose, 250mg

Metazachlor, 100 µg/ml, Acetonitrile, 5ml

PCB No. 16, 100µg/ml in Isooctane, 1ml

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