Acinetobacter

Small gram negative coccobacilli

short, plump Gram negative rods/ coccobacilli, typically 1.0 - 1.5 by 1.5-2.5µm, often becoming coccoid and appearing as diplococci.

Colonies are normally smooth, sometimes mucoid, pale yellow to greyish white.

Some environmental strains may produce a diffusible brown pigment

No lactose fermentation

Pip-tazobactam etest