I assume you are referring to Kodak Tri-X film. I live most of the year in Europe and work extensively in the States as well. I have used a whole lot of Tri-X 4x5 purchased in both places and have noticed absolutely no difference. I haven't done sensitometric tests, just printing from the negs, but it seems to be the same to me. I imagine the Kodak plants in France and Germany make film to the same specs as Kodak USA (there are two or three plants there as well).(posted 8616 days ago)Regards, ;^D)