Ahlstrom manufactures absorbent papers made of the highest-purity cotton linters. These media do not contain an additive of any kind, thus preventing any contamination during the transfer steps. Ahlstrom's absorbent papers are produced with a wide range of thickness and absorption levels for optimal wicking capabilities, drying, and blotting in any application. The key characteristics that help to define the right paper grade are the thickness, the basis weight, and the capillary rise (absorption speed). Thicker papers allow separation of higher quantities, while lower capillary rise is more suitable for higher resolution.
Each media is specifically designed to ensure high quality and consistency. Close surveillance in tightly controlled conditions ensures the highest uniformity, consistency, and smoothness of the sheets in all grades. This contributes to clean and even transfers during blotting. Fields of use include chromatography, electrophoresis, northern, western, and southern blots, antibiotic discs, and seed germination testing.