While spring cleaning, I encountered some 35mm color negatives which were developed roughly 10 to 15 years ago. Could they have lasted that long stored in a cardboard box for all those years?
They were not moved during that time and the house has heating in the winter, so rarely goes below 18C but has no air conditioning, so temperature can reach 44C on rare occasions but several weeks per year have ambient temperatures above 30C. We live on an island so humidity varies between 30 and 98%.
Ideally, if they are still good, I would like to send them to scan by a professional laboratory but I would rather not hire the service should they not be still good. I do not have a film scanner but a regular one, so if there is a reliable that could be done at little cost check the state of the negatives, that would be really useful.