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Argentothiosulfate Reduction

How undeveloped silver is removed from an emulsion

Sodium vs. Ammonium Thiosulfate Fixing

Which yields the more stable image?

Archival Washing

Making sure all the salts are gone...

Fiber Base vs. Resin Coated Paper

Is RC really that different?

Ilfochrome Image Stability

What you get in a dye-destructive process

Toning and Preservative Chemicals

Selenium, gold, and other things expensive or toxic...

Hand Coloring Considerations

Papers you use and what oils do...