Filter membranes, Isopore track-etched polycarbonate 

Unique white membrane for collection of particulates for inspection by light or electron microscopy. Isopore membranes have a flat, glassy, non-staining surface. They are hydrophilic, with a PVP wetting agent, and autoclavable.
Manufacturing process produces a membrane with precise pore size and narrow pore size distribution for accurate separations by particle size.