what is solid medium?
Answers
Answer:Solid medium contains agar at a concentration of 1.5-2.0% or some other, mostly inert solidifying agent. Solid medium has physical structure and allows bacteria to grow in physically informative or useful ways (e.g. as colonies or in streaks
Explanation:
Solid media is produced by adding agar to a liquid growth medium. During sterilization of the agar/ liquid medium in a steam autoclave the agar melts so that the medium is completely liquid. The sterile liquid medium is then dispensed into sterile Petri plates or tubes where it will solidify at room temperature.
Solid agar growth media in Petri plates is used to separate mixtures of bacteria by the process of streaking for isolation using a sterile inoculating loop. Streaking for isolation can also be used to visually determine if a bacterial culture appears to be a pure culture (single type) or a mixed population (various types).