date:Sep 19, 2016
e four surfaces were stainless steel, ceramic tile, wood and carpet. The four contact times were less than one, 5, 30 and 300 seconds.
The study found that some transfer takes place instantaneously at times 1 s, disproving the five-second rule. For example, watermelon got contaminated as soon as it touched the contaminant on the surface, regardless of the surface. However, with bread, bread and butter, and gummy candies, the transfer was negligible in less than 5 seconds, even 30 seconds in som