In a refrigerated area, if the temperature is 45–50°F, how often must equipment be cleaned?

• A. Every 4 hours
• B. Every 8 hours
• C. Every 16 hours
• D. Every 24 hours

Answer: (C)

In this temperature range, surfaces in the refrigerated area can support microbial growth more readily than at colder temps, so sanitation must be done on a fairly regular schedule to prevent contamination. When the environment sits around 45–50°F, the recommended practice is to clean and sanitize equipment every 16 hours. This interval lines up with typical shift cycles, helping ensure surfaces are refreshed before the next batch of food is handled and reducing the chance of residue or microbes building up between uses. If spills occur or equipment handles high-risk foods, sanitation should be performed sooner. Cleaning every 4 hours would be more aggressive than usually needed for routine operations at this temperature, and cleaning every 24 hours could allow too much time for residue and microbes to accumulate.