How many milliliters of water are needed for a bacteriological sample?

The requirement for bacteriological sampling is typically standardized to ensure accurate and reliable results in water quality testing. In this case, a sample size of 100 milliliters is often specified because it strikes a balance between being large enough to detect the presence of bacteria and manageable for handling and testing. The larger volume reduces the potential for contamination and improves the statistical validity of the test results, making it easier to isolate and identify bacterial colonies.

Utilizing 100 milliliters also aligns with many regulatory guidelines, ensuring that sampling techniques are consistent across various testing scenarios. This standardization is crucial for comparative analyses and ensuring public health safety. Therefore, selecting 100 milliliters as the required amount for a bacteriological sample is grounded in established practices within water quality monitoring.