What information must be displayed on a sign affixed to the hood?

The correct response is that the last inspection date must be displayed on a sign affixed to the hood. This information is critical for ensuring that the hood is functioning properly and has been assessed for safety. Regular inspections are essential in laboratory environments, especially when dealing with flammable gases and other hazardous materials. Displaying the last inspection date allows laboratory personnel to quickly confirm that the hood meets safety standards and has been maintained according to regulatory requirements.

Having this information visible enhances safety by reminding users of the need for ongoing vigilance regarding equipment condition. It can also assist in scheduling future inspections and maintenance, ensuring compliance with safety protocols and reducing the risk of accidents in the lab environment.