Procured potassium cyanide powder from Cyanolab for our mining operations. The powder was specifically as described and arrived on time. Highly endorse their services.” KCN is used being a photographic fixer during the wet plate collodion procedure.The KCN dissolves silver where it has not been made insoluble via the developer. https://donovanudezv.blogerus.com/53071773/the-ultimate-guide-to-potassium-cyanide-vs-sodium-cyanide