Quote Originally Posted by AgX View Post
Fotoimpex states they are from PVC.
I don't know af acetate sleeves. I know of sleeves made from PVC, PET, glassy paper.

That "acid and chlorine free" refers to paper sleeves I assume.

'An economical and practical method of storing negatives and contact-proof pages, the KNF08 35mm Translucent Storage Pages are available in Translucent Paper, and Transparent Print-Through Acetate - Free from Acid, Chlorine and suitable for long-term negative storage.'

A bit ambivalent, I admit.