• If you actually read the first document you linked to, it says (for the handwash): "Duration of the entire procedure: 40-60 seconds". If you watch the NHS video in your second link, you will see it is 41 seconds long (41 is a number between 40 and 60, by the way). The 20 seconds refers to the part where you rub your hands together; the video even times it and plays Happy Birthday twice!

About

Avatar for Petteri @Petteri started