Achieve precise results in sensitive analysis of your ionic analytes. Thermo Scientific™ Choice™ syringe filters made of PES (polyethersulfone) are a good option for ion chromatography samples, tissue culture filtrations, and filtration of proteins, nucleic acids, and high-temperature fluids. Choice syringe filters provide cleaner sample extracts by removing interfering materials and fine particles down to nominal pore size. A pre-injection filtration step provides more consistent and reliable results, protects sensitive equipment and extends column life.