Ahlstrom 3208-2020 Chromatography Blotting Paper (Cotton), Grade 320, 20 x 20 cm, 50/pk

This paper is designed for chromatography, electrophoresis, and blotting applications, including Southern, Northern, and Western blot techniques. It is also used as a wicking or transfer medium to ensure consistent buffer flow during gel transfers.

Grade 320 is an ultra-thick, high-absorbency paper (≈2.48 mm thickness), making it one of the thickest options available. It provides very high liquid capacity and fast wicking, ideal for handling large sample loads or demanding blotting setups.

The paper is made from high-purity cotton linters (alpha cellulose) with no additives, ensuring low background interference and contamination-free transfer in sensitive analytical applications.

Grade 320 offers very high absorption speed (around 240 mm/30 minutes), allowing efficient capillary action and uniform liquid distribution across the sheet. This helps ensure consistent results during chromatography and blotting processes.

This paper is best suited for high-load chromatography, protein/nucleic acid blotting, electrophoresis transfers, and general laboratory wicking applications, especially when high absorbency and uniform flow are critical for reliable results.