Smooth flat surface with sharply defined pore sizes, excellent chemical and thermal resistanceLow protein binding and low extractables ensuring no sample contamination.High chemical resistance and good thermal stability for a wide range of samples.Low, consistent ash and low tare weights.Smooth flat surface for good visibility of particles.Nuclepore track-etched polycarbonate membranes are manufactured from high-quality polycarbonate film and have sharply defined pore sizes, high flow rates, and excellent chemical and thermal resistance. The membranes have a smooth flat surface and exhibit very low levels of extractables.