What are pre-sterilized and disposable containers used for potable water collection for bacteriological analysis?

• A. Bacon bombs
• B. Dippers
• C. Plastic Bottles
• D. Kemmerer bottles

Answer: (C)

Collecting potable water for bacteriological analysis requires sterile, disposable containers to prevent introducing microbes that could alter the results. Pre-sterilized plastic bottles fit this need perfectly: they come ready to use, are designed for single use, and seal tightly to keep the sample uncontaminated during transport. They’re also lightweight, inexpensive, and inert enough not to interact with the sample.

Dippers are just tools to scoop water into a container and can contaminate the sample if not sterilized, so they’re not the container itself. Kemmerer bottles are reusable sampling bottles that require proper sterilization between uses, which adds risk and handling complexity compared to disposable sterile bottles. And “bacon bombs” isn’t a recognized option for potable water sampling.