A lot of these laws have to do with expected lifetime in “worst plausible storage conditions”, like poorly sealed boxes and wrong temperature and humidity
Yup, each batch needs to be stored in controlled conditions for the entire length of the expiration period. Many times the product expiration period is much longer, but controlled storage isn’t cheap, so just companies just do the minimum required by them.
Many places in the world mandate expiration dates on food items, no matter what the item in question actually is.
Water in a glass bottle? Expires in 24 months.
A lot of these laws have to do with expected lifetime in “worst plausible storage conditions”, like poorly sealed boxes and wrong temperature and humidity
Yup, each batch needs to be stored in controlled conditions for the entire length of the expiration period. Many times the product expiration period is much longer, but controlled storage isn’t cheap, so just companies just do the minimum required by them.