Hallo there, So I got the sodium thiosulphate fixer chemicals from our good friends at Silverprint, mixed up and all going well - but was wondering if there is a way to establish sufficient fixer times for fibre based paper? Film, I am thinking can run on twice the clearing time but paper, hmm not sure. Ralph's book details a method involving the use of a sulphide toner (which I don't have) - is there another way? All help/suggestions welcomed. Sim2.