Select Page

As you may know, till now i used to clean the silver deposit on top of gelatine layer with isopropyl alcohol. Last night i found a new treatment, in „The Keepers of Light“ by William Crawford, p. 297 that says (about gelatine plates and films) bluntly:

If there are no signs of mold you can clean the emulsion surface with ammonium hydroxide.

As I don’t have such a substance, this morning i’ve tried another alkali — sodium carbonate (1tbs disolved in 1cup warm water) — and i was amazed of how quick the gelatine gets cleaned of that nasty silver deposits. Here’s some before and after examples so you can see for yourself how nice the plate is cleaned.

And another one (same post-treatment on both scans, even the scanner exposure was locked):