Search results
Results from the WOW.Com Content Network
The sealed anaerobic jar is then incubated at a desired temperature to allow growth of the bacteria. In the above figure for example, the incubation occurred at 100 °F (38 °C). A colorless indicator strip provides proof that the anaerobic conditions were met and the agar plates can now be observed for bacterial growth.
The clarity of the sample is not necessarily reflective of the presence of bacteria as seemingly clear water may still have bacteria present. For some water systems a weekly dip slide test is recommended. For multiple tests the incubation period and temperature should be the same each time a new sample is assessed. Bacteria present in the ...
Once the growth medium in the petri dish is inoculated with the desired bacteria, the plates are incubated at the optimal temperature for the growing of the selected bacteria (for example, usually at 37 degrees Celsius, or the human body temperature, for cultures from humans or animals, or lower for environmental cultures). After the desired ...
The dilution plates are then incubated at a temperature of 37 degrees Celsius. [4] The plates are then incubated for sixteen to eighteen hours, although incubation time may be less for bacteria populations that divide quickly. [1]: 374 After incubation, the plates are examined to determine if bacterial growth has occurred in the inoculated ...
The time required for development in the mosquito ranges from 10 to 28 days, depending on the parasite species and the temperature. This is the extrinsic incubation period of that parasite. If a female mosquito does not survive longer than the extrinsic incubation period, then she will not be able to transmit any malaria parasites. [citation ...
The Miles and Misra Method (or surface viable count) is a technique used in Microbiology to determine the number of colony forming units in a bacterial suspension or homogenate. The technique was first described in 1938 by Miles, Misra and Irwin who at the time were working at the LSHTM. [1] The Miles and Misra method has been shown to be ...
The firm must determine the time and temperature of incubation as well as how many containers are incubated. [14] It is generally accepted to incubate at 20–25 °C for a minimum of 7 days followed immediately, or after a first reading, by incubation at 30–35 °C for a total minimum incubation time of 14 days.
The bacteria are mesophilic and grow best at temperatures between 35 and 37 °C. [ 1 ] H. influenzae was first described in 1893 [ 2 ] [ 3 ] by Richard Pfeiffer during an influenza pandemic [ 4 ] when he incorrectly identified it as the causative microbe, which is why the bacteria was given the name "influenzae".