Difference between flat dish method and membrane filtration method

1, the operation of the difference: flat dish method is a common microbial detection methods, it is through the samples to be examined evenly coated in solid medium on a flat dish, cultivated under suitable conditions to observe the growth. While the membrane filtration method is a physical filtration method, the samples to be examined will be filtered through the membrane filter, and the membrane will be placed on the appropriate culture medium for culture.

2, the difference in filtration effect: Petri dish method can directly observe and count the microbial colonies on the culture medium, you can get the morphology of each colony and the number of information, applicable to the detection of visible colonies. And the film filtration method through filtration of microorganisms concentrated in the film, can be used to detect the total number of microorganisms and the number of specific groups of bacteria, suitable for microbial detection that can not be directly observed.