Artists for many years have appreciated the qualities of the Langton. The paper is colour stable, mould-made, and acid-free. The best watercolour papers are acid-free to prevent the deterioration of paints and to preserve the integrity of the paper over time.- 12 sheets 300gsm (140lb) acid-free watercolour paper. The surface of a Not (Cold Pressed) paper has a moderate texture.
A Not sheet gets its name from 'not hot pressed'! It is made by taking a rough sheet and pressing it again without the felts. Not papers are generally considered the easiest to use.