How quickly can non-culturable analysis be conducted?

The correct answer is that non-culturable analysis can be conducted immediately by direct microscopy. This method allows for the observation and identification of microorganisms without the need for culturing them in a growth medium, thus providing instant results. Direct microscopy can reveal the presence of bacterial cells, including those that may not grow in culture conditions, providing a quick evaluation of microbial contamination in a sample.

This is particularly important in the context of microbial remediation, as certain pathogens may not be cultivable under standard laboratory conditions yet still pose a health risk. By employing direct microscopy techniques, professionals can assess the microbial load and determine necessary remediation strategies without the time delay associated with culture methods.

Other options describe methods or timelines that involve culturing or waiting for samples to develop, which would not directly relate to immediate non-culturable analysis.