You missed my point, Lupex & Azo are Chloride contact papers, and not Chloro-Bromide enlarging speed papers, I know they don't use Cadmium.

The variants of Brovira were not specialist warmtone papers, I thing Record Rapid and Portriga have Gevaert roots rather than Agfa.

Roger Hick's and Tim Rudman may not be emulsion chemists but they certainly have by far enough experience to be able to make extremely well informed judgements and comments.

Ian