What determines how long metal implements should be immersed in disinfectant between clients?

• A. The brand of disinfectant
• B. The required contact time
• C. The size of the implements
• D. The client’s allergy history

Answer: (B)

Disinfection duration is determined by the product’s contact time. The label specifies how long items must stay immersed or wet in the solution to reliably kill the target microbes. That dwell time is based on the chemistry of the disinfectant and the level of cleaning it provides, so following it ensures proper disinfection between clients. The brand name or product type matters for how effective it is and what surfaces it’s safe for, but they don’t set the time requirement. The size of the implements doesn’t change the needed duration, and a client’s allergy history affects safety considerations but not how long to soak items. Always immerse fully and maintain contact for the full recommended time to prevent cross-contamination.