Differential Media

∞ generated and posted on 2016.01.29 ∞

Microbiological growth media that allows one to distinguish, typically visually, among organisms that are capable of growing on that media.

There often is little difference between the idea of differential media and that of biochemical tests since usually the latter will provide some kind of distinction in terms of the appearance of organisms. Contrast differential media, however, with selective media as well as enrichment culture, though with the caveat that in many cases differential media is also selective media.

The following video gest off to a slow start but good introduction to the use of MSA plates, a type of both differential and selective media:

The following video is a little amateurish but nonetheless does a good job of introducing MacConkey medium: