Museo Pan Pro Panoramic Fine Art Paper for Inkjet - 13x40" - 25 Sheets is manufactured to archival standards, it is acid-free, buffered with calcium carbonate and contains no optical brighteners. Designed for professional printers 13 inches or wider. Museo PAN Pro format sheets are each interleaved with acid-free paper to protect the printing surface
Features: 100% cotton, which has the highest percentage of alpha cellulose (the purest form of cellulose) Buffered with calcium carbonate No fluorescent whiteners added Use of naturally occurring pure Artesian well water Acid-free Weight: 365 gsm Thickness: 21 mil Caliper: .019" Brightness: 91 pH: 7.9-8.5 Velina finish