Which of the following combinations of factors can influence the effectiveness of a chemical sanitizer?

• A. Pressure, altitude, and humidity
• B. Concentration, temperature, and contact time
• C. Color, odor, and taste
• D. Volume, mass, and density

Answer: (B)

Verified step by step guidance

1. Understand that the effectiveness of a chemical sanitizer depends on factors that influence the chemical reaction and microbial kill rate.
2. Identify that concentration refers to how much active sanitizer is present in a solution, which directly affects its ability to kill microbes.
3. Recognize that temperature can increase the rate of chemical reactions, often making sanitizers more effective at higher temperatures within safe limits.
4. Know that contact time is the duration the sanitizer remains in contact with the surface or microbes, which is crucial for ensuring sufficient microbial kill.
5. Conclude that among the given options, concentration, temperature, and contact time are the key factors influencing sanitizer effectiveness, while pressure, altitude, humidity, color, odor, taste, volume, mass, and density are not directly relevant.