Lately I came across a barely used, Spectrolino+Spectroscan (the purple one!!!), that was gathering dust in a printing shop - I showed mercy, quickly grabbed this abandoned, poor little creature and gave it new loving home it deserves.
After playing with my new puppy and making spectral plots for printing papers there appeared something that puzzeled me - the spectral plots done with no filtration had a reflectance peak at ~440nm as expected. But - to my suprise - they had much lower reflectance at 380nm than the spectral plots done with UV cut filter. I wonder why the UV filtered measurement has higher reflectance level in 380-400nm part - to me this seems illogical?
Here's a bunch of samples - Ilford Gold Fibre Silk, Smooth Pearl, Smooth Gloss, Smooth Lustre Duo: