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MICROBIOLOGY LAB EQUIPMENT Biologists working in a lab use certain basic tools such as microscopes, test tubes, beakers, flasks, Bunsens burners, etc. Moreover, a modern microbiology laboratory should be finished with the following equipment. Autoclaves electrically heates steam vessels for sterilizing ‘thermostable’ culture media, glassware, and other materials that for 15 min. it is also used for the destruction of biological waste. Microscopes of various powers are used to observe organism and samples more closely. Electron microscopes are widely used to study viruses and other microorganism at molecular level. Laminar flow cabinets provide an aseptic work area. Hot air ovens are used for the sterilisation of glassware and materials that are spoiled by moist heat. They can operate at temperatures up to 300° C and have a fon for circulating hot air Incubators are insulated, electrically heated cabinets providing microorganiisms with an optimum temperature for growth. The usual temperature of incubation is 37° C. Refrigerators are used for storing and/or preserving cultures, media, and many sensitive materials at low temperatures.