Dear Sirs, We have a potential use in the UK for granular activated carbon manufactured from silver birch and enquire if you have any products meeting the below basic specification Mesh size 4 x 10 Iodine No 279mg/g minimum BET surface area 250m2/g minimum Ash 5% maximum dry basis Moisture 5% maximum as packed Bulk density 288kg/m3 Kind regards, Steve.