Film Stain Removal ----- One. Use for films that have stained or discoloured. Potassium Alum ---- 50gm Citric Acid ----- 25gm Distilled water to make up to 1000ml. Share on Tumblr Tweet Return to Formulae Contents July 2024 Several books, featuring Christopher John Ball's photographs, are now available through Amazon or click on an image below to purchase via secure payments on lulu.com
Return to Formulae Contents
July 2024 Several books, featuring Christopher John Ball's photographs, are now available through Amazon or click on an image below to purchase via secure payments on lulu.com