Sustainable - Dependable - No Sacrifice. Sustainably sourced Domtar EarthChoice® Office Paper features ColorLok® technology to deliver bolder colors and faster drying times. Engineered to run smoothly on a wide variety of printing equipment, EarthChoice® Office Paper is a high-quality, dependable choice for everyday printing and copying needs as well as high-speed, high-volume applications. Acid-free for archival-quality results. Virgin fiber content is Elemental Chlorine Free (ECF).