Varycon VC-FB (Maco Multibrom F) is a variable-contrast enlarging paper with the highest silver content on the market (up to 3.5 g/m2). It has an extraordinary tonal range and does not contain additives, accelerators or whiteners like other fiber-based papers, meaning that its color will remain unchanged over time, thus delivering true archival permanence. Museum weight (320 g/m2). Glossy finish. Color: white. Neutral tone. Max. density without filter: 1.90. Spectral sensitivity up to 570nm, ISO P 100 without filter.