This is mixed bed and colour changing resin. Both cation and anion resins are combined in this one bag. Colour changes as the resin is used up.
Sold in 570 g or Bulk ; 3.75 kg (5 litre) sealed bags - 570 gram is enough for one 10"x2.5" cartridge
The anion resin is a Type I strongly basic gel resin with an indicator dye that changes from blue to light brown as the resin exhausts.