Elevation: flat, raised, low convex and dome shaped.
Transparency: transparent, opaque, and translucent.
Surface: smooth (mucoid) and shiny, rough and dull.
Color: colorless, white, pink, and pigmented
changes in medium
Eg. Hemolysis in Blood Agar Blackening of medium due to hydrogen sulfide production.
Semisolid culture media
. as an enrichment media
. as motility media
3. Fluid culture media Bacterial growth in fluid media is shown by a turbidity in the medium. Uses : . as an enrichment media . as biochemical testing media . as blood culture media
Preparation of culture media
Culture media contains essential ingredients for microbial growth requirements. For successful isolation of pathogens, culture media must be prepared carefully.