根據 Sidney W. Bondurant 等學者在2019年American journal of Infection Control 第8期種發表的報告，Benzalkonium Chloride 對病菌的效力在4小時後仍然維持在3-4 log10 （~99.9% - 99.99%）之內，證明Benzalkonium Chloride 的殺菌效果可維持更長時間。
According to a report by Sidney W. Bondurant et al. in Aug 2019, Benzalkonium Chloride based hand sanitizer remained active in the range of 3-4 log10 reduction after 4 hours of application. Detailed reports in below.
詳細報告 Detailed report
Demonstrating the persistent antibacterial efficacy of a hand sanitizer containing benzalkonium chloride on human skin at 1, 2, and 4 hours after application. By Sidney W.Bondurant, Collette M.Duley, John W.Harbell (American Journal of Infection Control, Volume 47, issue 8, Aug 2019)