Whatman™ Grade GB005 is a thick (1.5mm) highly absorbent blotting paper recommended for applications where fewer layers of blotting paper must still ensure a high capacity. Recommended for semi-dry blotting of proteins. This blotting paper is a pure cellulose produced entirely from the highest quality cotton linters with no additives of any kind. Ensures that no contamination will occur during the transfer steps. Manufactured and tested specifically for chromatographic and blotting techniques. This ensures the wicking capability and uniformity of capillary action which are important in obtaining clean and even transfers during blotting. Paper Thickness: 1.5mm. Sheet Size: 58 x 58cm. 25/Pack.