How Do You Grow Bacteria In Agar?
Agar is a compound that is derived from algae. It contains many nutrients, and bacteria can thrive on it. It is gelatinous, and is created by mixing powdered agar with water and adding heat. This serves to sterilize the surface and makes it a thick liquid. After this liquid is poured into sterile Petri dishes, it solidifies into a gel and can be used as a medium for bacterial growth. Swab the surface from which you are interested in culturing bacteria. This can be a countertop, toilet seat or drinking fountain. Make sure the swab is sterile when you begin, and place it back into the sterile container when you are finished swabbing. This will prohibit the introduction of bacteria from sources you are not interested in. Remove the top of the petri dish. Keep it in your hand, and do not lay it on any non-sterile surface, or you may introduce bacteria onto it. Remove the swab from its protective cover. Gently swipe the swab back and forth on the surface of the agar plate. Take care not to
