more Kallitype staining

I see this is an issue here, but mine is not with ongoing work and processing I can alter to solve. I got out a kallitype I made in 1985. It's been out of the light all these years. I'm seeing the yellow stain where the emulsion was brushed on, but neg masked off for white edge, so easy to see. I take it this is a clearing problem, either iron or silver? My question is, can I treat it in anything now to clear the stain?
Thank you,
Tyler

I can't answer your question but suggest that you contact Bostick & Sullivan. They have always been helpful to me with information and supplies.

HOME