Drigalski Litmus Lactose Agar 500G

Drigalski Litmus Lactose Agar is used as a non-selective differential medium for the detection of enteric pathogens. Litmus is the pH indicator in the medium. Lactose fermenters produce acid and thus change the colour of litmus to red forming red, colonies. Lactose non-fermenters form blue colonies on the medium.