The advent of Electron Microscopy in 1932 opens the door to visualizing small subcellular structure and viruses which were beyond the scope of light microscopy which can’t resolve objects separated...
Category: General Microbiology
The spread plate technique is a viable counting method employed to plate a liquid sample to isolate or count the bacteria in that sample. A perfect spread plate technique will result in visible and...
Pour plate method is usually the method of choice for counting the number of colony-forming bacteria present in a liquid specimen. Because the sample is mixed with the molten agar medium, a larger...
For organisms that grow well on agar plates, a streak plate is the method of choice for obtaining pure culture. The streak plate technique is used to isolate the organisms (mostly bacteria) from a...
Ethylene Oxide (ETO) Sterilization: Features and Limitations
Ethylene oxide (ETO) has been widely used as a low-temperature sterilant. ETO is a colorless gas that is flammable and explosive but it is liquid at temperatures below 10.8°C. ETO is an...
Robert Koch (1843-1910) was a German physician, scientist, and the first person to prove that bacterium is the cause of animal disease. Robert Koch was born on December 11, 1843, at Clausthal in the...