What is the required surface contact time when using chlorine for sanitizing?

The required surface contact time when using chlorine for sanitizing is indeed crucial for ensuring effective disinfection. The correct answer indicates that a minimum duration of 7 seconds is necessary for the chlorine solution to effectively eliminate harmful pathogens on surfaces.

This timeframe allows the chlorine to have sufficient interaction with the microorganisms, which is essential for breaking down their structure and ensuring that they can no longer pose a risk to food safety. In food service environments like Starbucks, where health standards are paramount, adhering to this contact time helps maintain a safe environment for both customers and staff.

Other options suggesting either shorter or longer times do not align with the established food safety standards that govern the use of chlorine sanitizers. It's important to follow the guidelines set forth by health departments and food safety organizations to ensure compliance and effectiveness in sanitization practices.