Petri dishes or plates is one of the most common item in biological labs use for culture plate technique to understand Bacteriology / Mycology / Infectious Diseases and other studies, Petri dishes or plates consist of transparent lid fit on top dish or plate and transparent container which is dish or plate and all of them made from coreless glass or plastic for easy observation and manipulation culture, There are three types of Petri dishes or plates and all of them based on shape as square or rectangle and material as glass or plastic and compartment for multiple culture media in single dish or plate, Steps using of Petri dishes or plates initiate by lid off Petri dish or plate and pour medium in about ¼ or ½ inch depth of dish or plate and swirl plate to distribute medium uniformly and let dish cool and harden for an hour and cover dish with lid and wrap them with Parafilm to avoid moisture loss and contamination and invert Petri dishes of plates during incubation to avoid falling droplets into media due to condensation of vapor which leads to uneven growth culture, During work with Petri dishes or plates sterilization should be done before and after use and gloves should be worn, Petri dishes or plates avoid contamination and provide observe cultures without remove lid and provide storage space for cultures and insects and seeds, Petri dishes or plates need experts because contamination always possibility during use, Petri dishes or plates use in microorganisms studies and pharmaceutical studies and genetic studies and tissue culture studies and insects behavior studies (Watch Related Video in #geneticteacher) #geneticteacher

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