using unopened boxes of 100+ year old glass plates
Thought I had posted this at one time, but did a search in the FORUM and came up empty handed.
I have collected a couple of boxes of unopened 4x5 glass plates, probably dating back to around 1900. Now I want to try to expose and develop them. Have some 4x5 glass plate holders which have seen better times but hoping to make one or two of them useable once again.
Condition of the outside of one box to be "as new" but of course have no clue to how the box was stored.
Was wondering if anyone else out there has tried exposing and developing vintage glass plates. I assume an ASA of 4 or 6 as a starting point. But what developer to develop them in? Also would like to add some Potassium Bromide as a restrainer, but have yet to find a reference to the amount of Potassium Bromide solution to add to the developer or how much longer to increase the development time.