Which statement is NOT true regarding surface disinfectants?

Chlorine dioxide is a highly effective disinfectant, known for its rapid action against a wide variety of pathogens, including bacteria, viruses, and some spores. It acts quickly, making it a strong choice in infection control protocols. Therefore, stating that chlorine dioxide acts as a slow-acting disinfectant is inaccurate, as its efficacy is recognized for its fast-acting properties.

The other statements are accurate in their context. OPA, or ortho-phthalaldehyde, is indeed classified as an intermediate-level disinfectant, primarily used in healthcare settings for the disinfection of heat-sensitive medical instruments. Glutaraldehyde is frequently referenced as a liquid sterilant when used at appropriate concentrations and exposure times. Alcohols, while effective for disinfecting surfaces, do lose their efficacy in the presence of organic matter like blood and saliva, which can interfere with their ability to kill microorganisms effectively. Hence, option C does not hold true.