This excellent quality, 100% cotton rag paper is ideal for mounting specimens. The off-white tone will enhance the appearance, while a slightly textured surface is ideal for good adhesion of mounting strips or adhesive. Sheets are 11.5" x 16.5" and available in 3 thicknesses. Grain direction is parallel to the long dimension for ease of handling once specimens have been mounted. Use buffered paper to resist acid migration from specimens. Unbuffered, available in heavyweight only, preserves specimens that will undergo DNA research. Sold in packages of 100 sheets.