CST Review Questions: Quiz 112 March 6, 2016 by Hassan Shah What is the benefit of using chlorhexidine for the purpose of skin preparation? A. Chlorhexidine removes microorganisms more rapidly than alcohol B. Chlorhexidine removes a greater quantity of microorganisms than alcohol C. Chlorhexidine removes microorganisms more rapidly than iodine D. Chlorhexidine has a residual effect of 5 to 6 hours Δ