NB: This kit does not include fixer – you will require a solution of 2.5 % Sodium thiosulfate (fixer) (25 gm (1 tbs) to every 1000mls of water)
The Argyrotype kit creates an iron-based silver image printing process was devised in 1996, using an unusual salt – silver sulphamate – in a ‘single-bottle’ sensitizer solution, having a long shelf-life, to avoid the problems of image loss caused by silver nitrate. The resulting purplish-brown print of nanoparticle silver has better prospects of endurance and a finer gradation than the traditional iron-silver processes, and may be readily toned.
THE ARGYROTYPE HISTORY
The Argyrotype process is a latter-day improvement on the late nineteenth century processes of Kallitype, Van Dyke, Sepia print, and Brown print, which were, in turn, all offspring of Sir John Herschel’s Argentotype of 1842. http://www.mikeware.co.uk/mikeware/Argyrotype_Process.html
NB: This kit does not include fixer – you will require a solution of 2.5 % Sodium thiosulfate (25 gm (1 tbs) to every 1000mls of water)