Whether you develop your own film or not, you should consider the best way to store your negatives. The sleeves provided by a one-hour photo lab are likely to be insufficient for both long-term storage and viewability. Purchasing sheets of negative sleeves make it easy to view your negatives, make contact sheets, and store them flat in binders created just for this purpose. The way a photo negative binder and a regular binder differ is that a negative binder will close like a box or briefcase to prevent dust from accruing in or around your negatives. Dust and negatives are not friends!

PrintFile is the most ubiquitous manufacturer of archival storage sheets, and they provide a negative sleeve sheet that fits either 5 images per row or 6 images per row for 35mm film. (They also make sleeves for 120 film, large format film, developed darkroom prints, and polaroid.) These are essential to have for any new film you might produce and they make your negative storage, even of old family photos, tidy and long-lasting. Clip them into a photo binder and they will be even more protected and organized.

Archival Storage Sheets 35-7B25 for 35mm Film Negatives 7 Strips 25 Pack