The formula to calculate the Dilution Factor (D) is:
\[ D = \frac{\text{CFU/mL}}{N} \]
Where:
The dilution factor is a measure used in microbiology to estimate the concentration of microorganisms in a sample. It is the ratio of the concentration of bacteria (CFU/mL) to the number of colonies counted (N). This value helps in understanding the level of contamination or the efficiency of bacterial growth under various conditions.
Let's assume the following values:
Using the formula to calculate the dilution factor:
\[ D = \frac{150,000}{150} = 1000 \]
The dilution factor is 1000.