Polycarbonate Track-Etched Membrane Filters

Polycarbonate track-etched filters are manufactured from high-grade polycarbonate film. This film is irradiated with ions that cross the material by breaking polymer chains. After ion passage, chemical etching dissolves these zones of broken polymer chains to form cylindrical pores of exactly defined sizes and densities.

The results are a well-calibrated pore size, narrow pore size distribution and a uniform structure to retain all particles of interest on the surface of the filter.

The major applications for these track-etched filters are particulate analysis, fluid clarification, cytology, cell biology, bioassays, water microbiology and environmental analyses (for example, asbestos).