PSI Barbering Practice Exam 2025 – All-in-One Resource to Master Your Certification!

Question: 1 / 580

_____________________ do not disinfect or sterilize.

Alcohols

Phenolics

Quats

Quaternary ammonium compounds, commonly referred to as 'quats,' are a class of disinfectants that are primarily used to reduce the number of microorganisms on surfaces. While they are effective at disinfection, they do not achieve complete sterilization, which requires eliminating all forms of microbial life, including spores. Quats are favored in many settings for their ease of use, compatibility with various surfaces, and ability to be less corrosive than other disinfectants.

In contrast, other options listed might have sterilizing capabilities or can be effective disinfectants under specific conditions. For instance, bleach solutions can achieve sterilization if used properly, while alcohols and phenolics are known for their disinfectant properties. However, because quats do not provide the necessary conditions for complete sterilization, they are categorized distinctly as disinfectants rather than sterilizers.

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Bleach

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