Which statement regarding contact time is accurate?

Which statement regarding contact time is accurate?

• A. Contact time is optional
• B. Short as possible
• C. Use the shortest amount of liquid
• D. Disinfectants must remain in contact for the time specified on the product label

Answer: (D)

Disinfectant dwell time is the period the surface must stay wet for the product to work effectively. The accurate statement reflects that disinfectants must remain in contact for the time specified on the product label, because that duration is what allows the microorganisms to be killed to the label’s claimed level. If you wipe away or rinse off too soon, or don’t keep the surface wet for that entire time, disinfection may not be complete and pathogens can survive. In salon practice, you apply the product to a clean surface, ensure it stays wet for the label’s dwell time, then follow the label’s directions for any rinsing or drying steps after that period. The other ideas—making contact time optional or using as little liquid as possible—undermine the product’s ability to disinfect and increase the risk of contamination.

Disinfectant dwell time is the period the surface must stay wet for the product to work effectively. The accurate statement reflects that disinfectants must remain in contact for the time specified on the product label, because that duration is what allows the microorganisms to be killed to the label’s claimed level. If you wipe away or rinse off too soon, or don’t keep the surface wet for that entire time, disinfection may not be complete and pathogens can survive. In salon practice, you apply the product to a clean surface, ensure it stays wet for the label’s dwell time, then follow the label’s directions for any rinsing or drying steps after that period. The other ideas—making contact time optional or using as little liquid as possible—undermine the product’s ability to disinfect and increase the risk of contamination.