Ahlstrom 320, 2.45 mm - 240 mm /30 min. This super thick grade is one of the thickest papers on the market. Offers extremely high flow and is recommended both for electrophoresis of large molecules and as a blotter to complete the blotting sandwich in gel transfer applications. Provides a smooth and uniform texture assuring continuous contact of buffer from the chamber through the gel and transfer membrane to the opposite pole or weight.