Which of the following is NOT a method to disinfect the respirator's face piece?

Which of the following is NOT a method to disinfect the respirator's face piece?

• A. Sponge it with 70% solution of ethyl or isopropyl alcohol.
• B. Submerge in hypochlorite solution (2 Tbsp chlorine bleach in 1 gallon water).
• C. Submerge in aqueous solution of iodine (1 tsp iodine in 1 gallon water).
• D. Wipe with plain water.

Answer: (D)

Disinfection requires antimicrobial action that kills or inactivates microorganisms on the surface. A 70% alcohol solution used to sponge the facepiece denatures proteins and disrupts membranes, providing rapid disinfection. Submerging in a hypochlorite solution (bleach) introduces strong oxidizing activity that inactivates a wide range of microbes. Submerging in an aqueous iodine solution also delivers antimicrobial effects that help disinfect the surface. Wiping with plain water, by contrast, does not kill microbes; it may remove some dirt, but it does not disinfect the facepiece. In practice, plain water cannot be relied on to achieve disinfection and must not be considered a disinfection method. Always follow manufacturer guidelines for disinfection to avoid damaging the respirator materials and to ensure effective pathogen control.

Disinfection requires antimicrobial action that kills or inactivates microorganisms on the surface. A 70% alcohol solution used to sponge the facepiece denatures proteins and disrupts membranes, providing rapid disinfection. Submerging in a hypochlorite solution (bleach) introduces strong oxidizing activity that inactivates a wide range of microbes. Submerging in an aqueous iodine solution also delivers antimicrobial effects that help disinfect the surface.

Wiping with plain water, by contrast, does not kill microbes; it may remove some dirt, but it does not disinfect the facepiece. In practice, plain water cannot be relied on to achieve disinfection and must not be considered a disinfection method. Always follow manufacturer guidelines for disinfection to avoid damaging the respirator materials and to ensure effective pathogen control.