Tilmicosin, 100 µg/ml, Methanol, 1ml

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

Ethanol standard in whole blood,2.0g/L,whole blood, 1.5mL

2-Chloroanthracene