The bacteriological sample bottle should be filled completely with sample water. True or False?

The statement about the bacteriological sample bottle needing to be filled completely with sample water is indeed false. When collecting a bacteriological water sample, it is essential to leave some air space in the bottle, typically around an inch, to allow for the possible expansion of gases produced by bacteria during transport and testing. This air gap helps prevent contamination and ensures accurate test results by creating an anaerobic environment where unwanted reactions can be minimized.

While it is critical to collect the sample in a clean and sterile manner, the complete filling of the bottle can create issues in the laboratory analysis process. Therefore, the correct practice is not to fill the bottle completely with sample water.