What are the three types of sanitizers?

• A. Chlorine, Iodine, Quats
• B. Iodine, Chlorine, Quats
• C. Quats, Iodine, Chlorine
• D. Chlorine, Quats, Iodine

Answer: (A)

Sanitizers used on food-contact surfaces fall into three main families: chlorine-based sanitizers, iodine-based sanitizers, and quaternary ammonium compounds (quats). The option that lists chlorine, iodine, and quats identifies exactly these three recognized sanitizer categories, which is why it is the best choice. Each type has its own usage nuances—chlorine is strong and inexpensive but can be inactivated by organic matter; iodine works well at lower concentrations and is less affected by some organic loads but can leave odor residues; quats perform well with organic matter and are generally non-corrosive, though they can be affected by certain cleaners and water conditions. Recognizing these three categories helps you apply the right sanitizer based on surface material, organic load, and required contact time.