What characteristic is an advantage of iodine sanitizer?

The characteristic that makes iodine sanitizer advantageous is its color indication, which signifies the strength of the solution. This feature allows users to visually assess whether the sanitizer is at the correct concentration for effective sanitation, helping to ensure that it is used properly to kill pathogens and maintain food safety. This visual cue can be particularly beneficial in a busy kitchen environment where quick decisions need to be made.

While iodine is indeed a fast-acting sanitizer, the visual color indicator is what distinguishes it and aids users in gauging its efficacy. It is important to note that iodine sanitizers do still require proper measurement to ensure they are diluted to the correct strength, which is why the option stating "does not need measurement" would not be accurate. Similarly, while iodine can provide effective sanitation, it is not universally more effective than chlorine, as effectiveness can depend on various factors including application and contact time.