The sell-by and best-by dates on milk cartons are ones we tend to pay close attention to. Many of us automatically discard milk if it is past one of those dates. However, those dates are not really scientifically established but rather are guesses based on experience.
A group of scientists and engineers at McMaster University in Hamilton, Ontario, has developed a new technology that could replace traditional “best before” dates on food and beverages with a definitive indication of the safety of the product.
