Which of the following is a valid sanitizer concentration range?

Which of the following is a valid sanitizer concentration range?

• A. 200 to 400
• B. 100 to 200
• C. 400 to 600
• D. 50 to 100

Answer: (A)

Sanitizers must be used at a specific strength to be effective and safe. For common kitchen sanitizers like quaternary ammonium compounds, the recommended active concentration is 200 to 400 ppm. Staying in that window ensures germs on surfaces are reliably reduced without leaving excessive residue or causing damage. If the strength is too low, sanitizing won’t be effective; if it’s too high, you risk residue, odor, or equipment wear and you may violate product instructions. The other ranges either fall outside the typical quat guidance or apply to different sanitizer types (for example, chlorine sanitizers are usually used around 50 to 100 ppm). So the valid sanitizer concentration range is two hundred to four hundred ppm.

Sanitizers must be used at a specific strength to be effective and safe. For common kitchen sanitizers like quaternary ammonium compounds, the recommended active concentration is 200 to 400 ppm. Staying in that window ensures germs on surfaces are reliably reduced without leaving excessive residue or causing damage. If the strength is too low, sanitizing won’t be effective; if it’s too high, you risk residue, odor, or equipment wear and you may violate product instructions. The other ranges either fall outside the typical quat guidance or apply to different sanitizer types (for example, chlorine sanitizers are usually used around 50 to 100 ppm). So the valid sanitizer concentration range is two hundred to four hundred ppm.