Which type of chemical kills all microbial life and spores?

Which type of chemical kills all microbial life and spores?

• A. Sterilizer
• B. Sanitizer
• C. Disinfectant
• D. Germicide

Answer: (A)

The main idea is distinguishing the level of microbial destruction. A chemical described as a sterilizer is capable of achieving sterilization, which means it kills all microbial life, including spores, on the treated surface or instrument when used under validated conditions. That is why this option fits best: sterilization targets every form of life, not just some pathogens. In contrast, sanitizers only reduce microbial counts to safe levels, disinfectants kill many pathogens but do not guarantee destruction of spores, and germicides are a broad label for agents that kill germs but don’t specify complete sterilization or sporicidal activity. So a chemical that is a sterilizer is the one that achieves total inactivation, provided the product’s instructions for contact time and conditions are followed.

The main idea is distinguishing the level of microbial destruction. A chemical described as a sterilizer is capable of achieving sterilization, which means it kills all microbial life, including spores, on the treated surface or instrument when used under validated conditions. That is why this option fits best: sterilization targets every form of life, not just some pathogens. In contrast, sanitizers only reduce microbial counts to safe levels, disinfectants kill many pathogens but do not guarantee destruction of spores, and germicides are a broad label for agents that kill germs but don’t specify complete sterilization or sporicidal activity. So a chemical that is a sterilizer is the one that achieves total inactivation, provided the product’s instructions for contact time and conditions are followed.