The Standard Proof-Paper Roll: 24" x 100' from Epson is designed for use with color matching in color-critical commercial offset press applications. This 9-mil semi-matte paper offers a base color, heavy weight, and gloss level designed to meet the needs of any commercial environment. It is optimized for proofing when used with Epson UltraChrome K3 Ink. It offers excellent short-term stability and is designed to meet the standards of the GRACoL Committee.