This is a differential medium. It tests an organism's ability to ferment the sugar glucose as well as its ability to convert the end product of glycolysis, pyruvic acid into gaseous byproducts. This ...
1. Collect your inoculating loop, as well as your Gram-positive Unknown A and Gram-negative Unknown B, and proceed to the KOH test station. A solution of 3% KOH should be provided there. 2. Place a ...