Why 100% Cotton Rag is the Gold Standard
When you hold a museum-quality print, you can feel the difference before you look at the image. That weight comes down to one material: 100% cotton rag.
Why wood pulp fails. Most paper is made from wood pulp, and wood contains lignin, an organic compound that breaks down into acid as it ages. That's why an old newspaper left in the sun goes yellow, then brittle, then crumbles at the corners.
Cotton has no lignin. A sheet of 100% cotton rag has nothing in it that turns on the image over time. Add a calcium carbonate buffer, which neutralises the acid the paper absorbs from the air in an ordinary room, and you have a surface designed to sit on a wall for a very long time without changing.
Why it prints better. Longevity is only half of it. Cotton fibre is absorbent in a way coated stock is not. Pigment ink is made of tiny particles of colour that hold up far longer. Gradients step more smoothly. The surface has a faint felt texture that catches light without reflecting it, so there's no glare fighting the image from any angle in the room.
The standard. Hahnemühle has been making paper in Germany since 1584. Photo Rag 308 gsm is the sheet most fine art printers measure everything else against, and it meets ISO 9706, the international standard for paper permanence.
It is the only paper I use.