Digital BW, The Print

Dear group,

I use Permajet Museum classic as my standard paper (300gr). It's not 
cheap but I use it for it's wunderfull characteristics when printing 
BO with Eboni or VTblax. But the whitness of the paper is somewhat 
low. Does anybody know a paper that is comparable with the museum 
classic paper (weight etc.) but with higher whiteness ?

Thanks,   René