What must all bottles and containers do to comply with safety regulations?

The requirement for all bottles and containers to be distinctly and correctly labeled to disclose their contents is crucial for safety regulations. Proper labeling serves several important purposes: it informs users about the contents, including any potential hazards, and provides essential information regarding safe handling and appropriate usage. This is especially important in environments such as laboratories, kitchens, or industrial settings, where individuals may encounter various chemicals or substances.

Correct labeling ensures that employees or consumers can quickly identify the contents, which is vital for preventing accidents, misuse, or exposure to harmful substances. Furthermore, accurate labeling is a key component of compliance with various regulatory standards, including those set by the Occupational Safety and Health Administration (OSHA) and the Environmental Protection Agency (EPA), aimed at safeguarding health and safety.

While the other options—storing in a dark place, having an expiration date, and being sealed with a tamper-evident seal—serve specific functions related to storage, preservation, or security, the critical issue of informing users about the contents of containers exemplifies the primary focus of safety regulations. Hence, being distinctly and correctly labeled is paramount for safety compliance in handling any substances contained within bottles and containers.