NIC Barber Written (Theory) ExamScientific ConceptsEasy
A barber is preparing to disinfect non-porous tools after use. Which of the following is the minimum contact time required for an EPA-registered disinfectant to be effective against most common pathogens?
- A30 seconds
- B10 minutes
- C1 minute
- D5 minutes
Show answer & explanationAnswer & explanation
Correct answer: B. 10 minutes
EPA-registered disinfectants typically require a minimum contact time of 10 minutes to effectively kill a broad spectrum of pathogens on non-porous surfaces. Shorter times may not ensure complete disinfection.
Why the other options are wrong
- A. 30 seconds is generally too short for effective disinfection of most pathogens.
- C. 1 minute is insufficient for the majority of EPA-registered disinfectants used in barbering.
- D. 5 minutes may be sufficient for some specific disinfectants, but 10 minutes is the more common and safer minimum.
Disinfectant Contact Time
The duration a disinfectant must remain wet on a surface to effectively kill pathogens, as specified by the manufacturer.
- Crucial for effective infection control.
- Varies by product, but 10 minutes is a common minimum.
- Failure to meet contact time renders disinfection ineffective.
Memory trick: Clean, Contact, Cover: The three 'C's of effective disinfection.