The Gram-positive rod, Bacillus subtilis is lipase positive (pictured on the right) The plate pictured on the left is lipase negative. 1. Collect your inoculating loop, as well as your Gram-positive ...

This is a test commonly used when trying to identify Gram-negative enteric bacteria, all of which are glucose fermenters but only some of which produce gas. *Note - broth tubes can be made containing ...