The Canson Infinity ARCHES® BFK Rives® Pure White (310gsm) is an acid-free 100% cotton paper with a pure white tone
   that is achieved without the use of optical brighteners. This paper  
has a higher CIE whiteness value compared to the ARCHES® BFK Rives White
  paper. Its perfectly  balanced soft grain which enhances the details 
in  every image. Thanks to  the use of a 100% cotton rag and the  
time-honoured method of  manufacturing its paper base on a traditional  
cylinder mould machine at  the ARCHES® paper mill in France, one of the 
 oldest papermakers in  France, the paper is very soft and supple.
  With its unique inkjet  receiving layer, this prestigious paper is  
capable of producing prints  of impressive colour rendition, deep blacks
  and natural whites that  helps photographers, artists and printmakers 
 to create images with  superb tonal range, excellent highlights and  
mid-tones for both limited  and open edition work.