Escherichia coli 100 000 cfu/ml什麼意思

"Escherichia coli 100 000 cfu/ml" refers to a concentration of Escherichia coli bacteria in a given sample, expressed as colony-forming units (CFUs) per milliliter (ml). In this case, there are 100,000 CFUs of E. coli per milliliter of the sample.

A colony-forming unit (CFU) is a measure of the number of viable bacteria or fungal cells in a sample. It is called a "colony-forming" unit because, under the right conditions, a single cell can grow into a colony (a visible cluster of cells). The term "viable" is important because it means that the cells are alive and capable of growing into colonies.

In the context of E. coli, this measurement could be used in various scenarios, such as testing water quality, food safety, or medical samples. A high concentration of E. coli, such as 100,000 CFUs/ml, might indicate contamination and could be a cause for concern, depending on the situation and the relevant health and safety guidelines.