Polycarbonate Track Etch Membrane Filters, 2.0um, 90mm, White, Nonsterile, 30/Pk
GVS SKU: 1222070

Featuring a thin, microporous polycarbonate film with precisely defined cylindrical pores, these Polycarbonate Track Etch (PCTE) membrane discs deliver controlled surface filtration at a 2.0 micron pore size across a 90mm diameter. Produced through a two step track etching process, the film is first irradiated with ions that create tracks through the polymer, which are then chemically etched into uniform, well calibrated pores. Although polycarbonate is naturally hydrophobic, the membrane is treated with a polyvinylpyrrolidone (PVP) wetting agent to render it hydrophilic, allowing use in water and aqueous solutions without pre wetting. The resulting membrane is a thin, translucent film with a smooth, glass like surface that captures particles larger than the pore size on its surface.

Key Polycarbonate Track Etch Membrane Characteristics

Hydrophilic: PVP treatment makes the inherently hydrophobic polycarbonate film hydrophilic for direct use with aqueous samples.
Precise surface capture: Absolute pore size and uniform pore density retain particles larger than the pore size on the membrane surface for predictable separation.
Smooth, glass like surface: The thin, translucent, planar structure is well suited to particle identification and microscopic analysis.
Low protein binding: Minimal nonspecific binding and low extractables support clean, consistent results.
Strong and thermally stable: Withstands operating temperatures up to 140 C and is autoclavable.

Key Construction Characteristics

Material: Polycarbonate Track Etch (PCTE) film.
Pore size: 2.0 microns.
Diameter: 90mm.
Format: Plain (not gridded), white membrane disc.
Packaging: Nonsterile, 30 discs per pack.

With uniform pore geometry and a smooth, planar surface, these membranes maintain reliable flow control and consistent particle retention from disc to disc. Low protein binding and low extractables help preserve sample integrity, making them dependable for high purity and general filtration as well as microscopic evaluation of captured particles.