Which of the following statements is true about chlorine bleach solutions?

• A. They should never be used as a sanitizer.
• B. They can be used as both sanitizer and disinfectant.
• C. They are only for blood cleanup.
• D. They require no mixing ratio.

Answer: (B)

Chlorine bleach solutions can function as both a sanitizer and a disinfectant when used with proper dilution and contact time. The active ingredient, sodium hypochlorite, is effective at reducing microbial loads to safe levels on surfaces (sanitizing) and at killing most pathogens on surfaces (disinfecting) depending on how concentrated the solution is and how long it remains on the surface. This makes the statement true because bleach is routinely used in both roles in cleaning programs. The other ideas don’t fit because bleach is indeed used as a sanitizer, it isn’t limited to blood cleanup, and effective use requires following a specific mixing ratio and appropriate contact time rather than using it undiluted or without guidance.