What is the contamination control process sequence from least to most stringent?

What is the contamination control process sequence from least to most stringent?

• A. Cleaning > sanitizing > disinfecting > sterilizing.
• B. Sterilizing > disinfecting > sanitizing > cleaning.
• C. Cleaning > disinfecting > sanitizing > sterilizing.
• D. Sanitizing > cleaning > sterilizing > disinfecting.

Answer: (A)

Contamination control moves from the least to the most stringent level. First, cleaning removes soil and organic matter, which helps later steps work effectively. Then sanitizing lowers the microbial load to safe levels without necessarily killing all organisms. Next, disinfecting eliminates most pathogens, providing a higher level of control than sanitizing. Finally, sterilizing destroys all microorganisms, including spores, the most stringent level. Therefore, the sequence from least to most stringent is cleaning, sanitizing, disinfecting, sterilizing. The other options either place sterilizing too early or reverse the relative stringency of sanitizing and disinfecting.

Contamination control moves from the least to the most stringent level. First, cleaning removes soil and organic matter, which helps later steps work effectively. Then sanitizing lowers the microbial load to safe levels without necessarily killing all organisms. Next, disinfecting eliminates most pathogens, providing a higher level of control than sanitizing. Finally, sterilizing destroys all microorganisms, including spores, the most stringent level. Therefore, the sequence from least to most stringent is cleaning, sanitizing, disinfecting, sterilizing. The other options either place sterilizing too early or reverse the relative stringency of sanitizing and disinfecting.