Supports high flow rates with good through-output volume. Low protein binding. Compatible with high temperature liquids. Mechanically strong membrane low in extractable ions. PES is certified for ion chromatography, tissue culture filtration, filtration of proteins and nucleic acids. Polyethersulfone membranes are hydrophilic and have low protein adsorption. They are primarily used for aqueous or partially organic media (pH 2-12) in pharmaceutical and biological sample preparation.