Basis of differentiation

Selective media

Differential media

Definition

Selective media are utilized to encourage the growth of particular microorganisms while inhibiting the growth of others

Differential media are types of substances used to distinguish one organisms from another 

Process

Uses unique growth characteristics of a  microorganism to select it from the others

Uses specific growth patterns of microorganisms to differentiate them from others

Number of microorganisms

Only permits the growth of a single microorganism in the medium

Permit several closely related microorganism to grow in the medium 

Indicators

Do not use indicators

Use indicators