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Petri dish. A glass Petri dish with culture. A Petri dish (alternatively known as a Petri plate or cell-culture dish) is a shallow transparent lidded dish that biologists use to hold growth medium in which cells can be cultured, [1][2] originally, cells of bacteria, fungi and small mosses. [3] The container is named after its inventor, German ...
Liesegang rings (/ ˈliːzəɡɑːŋ /) are a phenomenon seen in many, if not most, chemical systems undergoing a precipitation reaction under certain conditions of concentration and in the absence of convection. Rings are formed when weakly soluble salts are produced from reaction of two soluble substances, one of which is dissolved in a gel ...
Agar (/ ˈeɪɡɑːr / or / ˈɑːɡər /), or agar-agar, is a jelly-like substance consisting of polysaccharides obtained from the cell walls of some species of red algae, primarily from "ogonori" (Gracilaria) and "tengusa" (Gelidiaceae). [1][2] As found in nature, agar is a mixture of two components, the linear polysaccharide agarose and a ...
Nutrient agar is a general-purpose solid medium supporting growth of a wide range of non- fastidious organisms. It typically contains (mass/volume): [ 1 ] 0.5% peptone - this provides organic nitrogen. 0.3% beef extract / yeast extract - the water-soluble content of these contribute vitamins, carbohydrates, nitrogen, and salts.
An agar plate is a Petri dish that contains a growth medium solidified with agar, used to culture microorganisms. Sometimes selective compounds are added to influence growth, such as antibiotics. [1] 96 pinner used to perform spot assays with yeast, fungal or bacterial cells. Individual microorganisms placed on the plate will grow into ...
Cell culture in a small Petri dish Epithelial cells in culture, stained for keratin (red) and DNA (green). Cell culture or tissue culture is the process by which cells are grown under controlled conditions, generally outside of their natural environment.
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Petri dish/agar plate: to act as a supporting container to hold the culture medium in Platinum wire loop: used to inoculate test samples into culture media for bacterial or fungal cultures, antibiograms, etc.; sterilized by flaming to red hot before use Pre-sterilized disposable container: specimen collection