A truly professional Conservation board, which conforms to the Fine Art Trade Guild requirements for Conservation (level 2). The core is made from alpha cellulose fibres, featuring a soft, natural, white colour that will remain white. Each board is alkaline-sized, acid-free and calcium carbonate buffered for enhanced durability and longevity. Being conservation quality, boards are lignin-free with no optical brighteners. Cover papers are colourfast, resillient and bleed-resistant. Manufactured in the UK.