Many thanks for the quick responses - off into the darkroom for another session today and will adjust the sodium sulphite to two teaspoons per litre - this measurement is also recommended in the Tim Rudman book I was reading last night. Feel this is a stupid question but will ask anyway - in Tim's book on Toning he says to discard the wash aid after the selenium toned print has been through it - does he mean a fresh batch of wash aid needs to be made up for each individual print or can I run 10 or 12 prints through the same tray - I intend to selenium tone prints that have already been through the usual archival process. The devil's in the details. as they say!
Thanks again .... Patricia