Quote Originally Posted by wogster View Post
Polyester as a film base, has not been around long enough to know how long it lasts, it may last 1000 years, it may only last 20, nobody really knows.
PET base long term stability of at least 500 years has been proved by the Rochester Institute of Technology.
The YCM Separation Archival Master the way A.M.P.A.S define it is black-and-white polyester film stock.