Colony count 10^3 cfu/ml什麼意思

"Colony count 10^3 cfu/ml" is a microbiological term that describes the number of colony-forming units (CFUs) per milliliter of a sample. In this case, "10^3" means 10 to the power of 3, which is equal to 1,000. Therefore, a colony count of 10^3 cfu/ml indicates that there are 1,000 CFUs per milliliter of the sample.

This measurement is typically used to determine the concentration of bacteria or other microorganisms in a liquid sample, such as water, food, or a culture medium. The count is obtained by taking a sample, diluting it if necessary, and spreading it onto an agar plate. The plate is then incubated, and the number of colonies that grow on the plate is counted. This number is then used to calculate the concentration of CFUs per unit volume of the original sample.