NationMaster - Encyclopedia: Petri dish

A Petri dish is a shallow glass or plastic cylindrical dish that biologists use to culture cells, which can be bacteria, animal, plant, or fungus. It was named after the German bacteriologist Julius Richard Petri (1852–1921) who invented it in 1877 when working as an assistant to Robert Koch. Glass Petri dishes can be re-used by dry heating in a hot air oven at 160 degrees for one hour, while the plastic Petri dishes must be disposed of after use. Image File history File links Szalka_petriego. ... Image File history File links Szalka_petriego. ... This article is about the material. ... This article or section does not cite any references or sources. ... The word cylinder has several meanings. ... A biologist is a scientist devoted to and producing results in biology through the study of organisms. ... A microbiological culture is a way to determine the cause of infectious disease by letting the agent multiply (reproduce) in predetermined media. ... Drawing of the structure of cork as it appeared under the microscope to Robert Hooke from Micrographia which is the origin of the word cell being used to describe the smallest unit of a living organism Cells in culture, stained for keratin (red) and DNA (green) The cell is the... Julius Richard Petri (Barmen, May 31, 1852 – December 20, 1921 in Zeitz), German bacteriologist who invented the Petri dish. ... 1852 was a leap year starting on Thursday (see link for calendar). ... Year 1921 (MCMXXI) was a common year starting on Saturday (link will display the full calendar). ... 1877 (MDCCCLXXVII) was a common year starting on Monday (see link for calendar). ... For the American lobbyist, see Bobby Koch. ...

For microbiology, agar plates are very frequently used. The dish is partially filled with warm liquid agar along with a particular mix of nutrients, salts and amino acids and, optionally, antibiotics. After the agar solidifies, the dish is ready to receive a microbe-laden sample (although to grow some microbes it is often necessary to apply the sample with the hot agar). An agar plate streaked with microorganisms Microbiology is the study of microorganisms, which are unicellular or cell-cluster microscopic organisms. ... An agar plate streaked with microorganisms isolated from a deep-water sponge. ... This does not adequately cite its references or sources. ... Phenylalanine is one of the standard amino acids. ... Staphylococcus aureus - Antibiotics test plate. ...

Other Petri dish uses do not involve agar; for instance, cell culture. Epithelial cells in culture, stained for keratin (red) and DNA (green) Cell culture is the process by which either prokaryotic or eukaryotic cells are grown under controlled conditions. ...

Modern Petri dishes often have rings on the lids and bases which allow them to be stacked so that they do not slide off one another. Multiple dishes can also be incorporated into one plastic container to create what is called a "multi-well plate". A microtiter plate is essentially a highly modified multiwell Petri dish plate. A 96-well microtiter plate. ...

As well as making agar plates, empty Petri dishes may be used to observe plant germination, small animal behaviour, or for other day-to-day laboratory practices such as drying fluids in an oven and carrying and storing samples. An agar plate streaked with microorganisms isolated from a deep-water sponge. ...

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Categories: Laboratory glassware | Microbiology equipment An agar plate streaked with microorganisms isolated from a deep-water sponge. ... A copper aspirator. ... Front loading autoclaves are common Stovetop autoclaves need to be monitored carefully and are the simplest of all autoclaves Multiple large autoclaves are used for processing substantial quantities of laboratory equipment prior to reuse, and infectious material prior to disposal. ... Look up Bunsen burner in Wiktionary, the free dictionary. ... A calorimeter is a device used for calorimetry, the science of measuring the heat of chemical reactions or physical changes as well as heat capacity. ... An electronic bacterial colony counter. ... A colorimeter is a device used to measure the absorbance of a specific solution. ... A laboratory tabletop centrifuge A laboratory centrifuge is a piece of laboratory equipment, driven by a motor, which spins liquid samples at high speed. ... A common modern fume hood. ... A glove compartment is a compartment built into the dashboard on the passengers side of an automobile, often used for miscellaneous storage. ... In microbiology, an incubator is a device for controlling the temperature, humidity, and other conditions in which a microbiological culture is being grown. ... A laboratory equipment for the homogenization of various types of material, such as tissue, plant, food, soil, and many others. ... UV light desinfects the sterile laminar flow cabinet when not in use Laminar flow cabinet or laminar flow closet is a carefully enclosed bench designed to prevent contamination of semiconductor wafers, biological samples, or any particle sensitive device. ... A magnetic stirrer is a type of laboratory equipment consisting of a rotating magnet or stationary electomagnets creating a rotating magnetic field. ... Robert Hookes microscope (1665) - an engineered device used to study living systems. ... A 96-well microtiter plate. ... Plate readers (also know as microplate readers) are laboratory instruments designed to detect biological, chemical or physical events in samples stored in microtiter plates. ... Spectrophotometer In physics, spectrophotometry is the quantitative study of electromagnetic spectra. ... A stir bar (or flea) is a magnetic bar, used to stir a chemical reaction mixture or solution in a laboratory. ... It has been suggested that List of temperature sensors be merged into this article or section. ... A Mini-Vortexer with micro-centrifuge tube. ... Three static mixers: The top is an alternating spiral with each spiral offset by 90Â°; the second is the above in a delivery tube, such as for epoxy; the last is a larger metal mixer used to divide a flow into streams that intersect at 90Â°. - Static Mixers use the... Brown glass jars with some clear lab glassware in the background Laboratory glassware refers to a variety of equipment, traditionally made of glass, used for scientific experiments and other work in science, especially in chemistry and biology laboratories. ... A beaker is a simple container for liquids, very commonly used in laboratories. ... A large, thick-walled laboratory tube used for strongly heating substances with a Bunsen burner or other heat source. ... A BÃ¼chner funnel connected to a flask with a tube leading to a vacuum pump BÃ¼chner funnel is a piece of laboratory equipment used in suction filtration. ... A burette (also buret) is a vertical cylindrical piece of laboratory glassware with a volumetric graduation on its full length and a precision tap, or stopcock, on the bottom. ... Cold fingers. ... Two different condensers are seen here: a Vigreux condenser is used as a fractionating column on left, and a Liebig condenser cools the hot vapors to liquid on right In a laboratory, a condenser is a piece of laboratory glassware used to cool hot vapors or liquids. ... A conical measure is a type of laboratory glassware which consists of a conical cup with a notch on the top to allow for the easy pouring of liquids. ... For other uses, see Crucible (disambiguation). ... A cuvette is a kind of laboratory glassware, usually a small square tube, sealed at one end, made of plastic, glass, or optical grade quartz and designed to hold samples for spectroscopic experiments. ... Erlenmeyer flasks from the Argonne National Laboratory glassblowing shop. ... Conical flask For the episode of The X-Files, see The Erlenmeyer Flask. ... Round-bottom flasks are types of flasks having spherical bottoms used as laboratory glassware, mostly for chemical or biochemical work. ... Florence flask A Florence flask (also known as a round bottom flask or a boiling flask) is a piece of laboratory glassware. ... A volumetric flask. ... A BÃ¼chner funnel connected to a flask with a tube leading to a vacuum pump A BÃ¼chner flask, also known as a vacuum flask, is a thick-walled erlenmeyer flask with a glass tube and hose barb protruding about an inch from its neck, connected to an aspirator. ... A beautiful retort. ... A gas syringe showing its components separate and together A gas syringe also known as glass collecting bottle, is a piece of laboratory glassware used to draw a volume of a gas from a beaker or other closed system, or measure the volume of gas given off in a reaction. ... right|thumb|100px|Graduated cylinder. ... Glass Tube, a tube made of glass used for carrying gases between pieces of apparatus during a laboratory experiment. ... An NMR tube filled with a colorless sample, sealed with a green polyethylene cap and Parafilm Left to right: Flame, septum and polyethylene cap sealed NMR tubes Aqua regia has been added to these NMR tubes to remove all traces of organic material. ... This article is about the laboratory instrument. ... Separating funnel A separating funnel or separation funnel or separatory funnel is a piece of equipment used in science to separate two immiscible liquids or solutions of different densities. ... A schematic representation of a Soxhlet extractor A Soxhlet extractor is a type of laboratory glassware invented in 1879 by Franz von Soxhlet. ... A test tube (Sometimes culture tube) is a kind of laboratory glassware, composed of a fingerlike length of glass tubing, open at the top, sometimes with a rounded lip at the top, and a rounded U shaped bottom. ... A thistle tube is a piece of laboratory glassware consisting mostly of a shaft of tube, with a reservoir and funnel-like section at the top. ... Caesium fluoride sample on a watch glass A watch glass is a circular, slightly concave piece of glass used in chemistry as a surface to evaporate a liquid, or as a cover for a beaker. ...

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