3)Viable count using 1 serial dilutions of the sample 0
3）Viable count using serial dilutions of the sample
4)Colonies count by membrane filtration Membrane filter removed and placed in plate Water sample filtered containing the Membrane filter through membrane appropriate Incubation Typical on a filter support filter (0.45 um) medium for 24 hours colonies
4) Colonies count by membrane filtration
Measure of cell mass 1.Fresh weight 2.Dry Weight 3.Metabolic Activity 4.Turbidity
Measure of cell mass 1. Fresh weight 2. Dry Weight 3.Metabolic Activity 4. Turbidity
Turbidity Spectrophotometer meter 111/ amp Tube of Photocell bacterial or detector suspension Hours
Turbidity
7.2 Growth Microbial growth is at the level of both the individual and the population Individual growth Increase in size and/or mass of an organism with time Population growth=increase in numbers of micro-organisms in microbial populations the knowledge of these two aspects can lead to the understanding of the rules of microbial growth
7.2 Growth Microbial growth is at the level of both the individual and the population Individual growth = Increase in size and/or mass of an organism with time Population growth= increase in numbers of micro-organisms in microbial populations the knowledge of these two aspects can lead to the understanding of the rules of microbial growth