How often should I replace my PANTONE guides?
Pantone uses the fines quality substrate materials, but all paer stocks will yellow over time, which can change the appearance of the color of the inks printed on them. Product color appearance will also change from handling. Pantone recommends replacing color tools annually to ensure accurate color matching. This recommendation is clearly stated on the outside back covers of current product.To help offset the cost of upgrading, you can take advantage of Pantone's trade-in program, Chip-In. Read more at http://www.pantone.com/pages/pantone/Pantone.aspx?pg=20831&ca=4.