Microforms

Aperture cards

Remove the film chips from their mounts, wash the chips, and remount them. This treatment is time-consuming, but it is the only one at present.

Microfilm strips in jackets

Cut the strips from the jackets with sleeve cutters. Wash and dry the film and insert it into new jackets.

Diazo microfiche and microfilm

Check for readability. If the photograph has blistered, discard it and replace it with a print from the security copy. If the photograph has not delaminated, wash it in cool water and dry it on blotters or a lint-free cloth.

Silver gelatin-type microfilm

Label as wet film and ship to a microfilm processor.