How should a standard supermarket tomato be cleaned before putting it in a green salad. Is a quick rinse under running water with light rubbing under the palm and fingers adequate?
From a quick Google search:
you should rinse, rub the surface, rinse again, and dry.
Pretty simple, and it's pretty much what you suggested. The site claims to be getting their advice from a scientific study, and I'm inclined to believe them, but they don't provide a link.