Polycarbonate Track Etch Membrane Filter Discs, 0.2um, 19mm, Hydrophilic, Nonsterile, 100/Pk
GVS SKU: 1220694

Featuring a thin, microporous polycarbonate track etched (PCTE) film with precisely defined cylindrical pores, these membrane discs deliver accurate 0.2um surface separation across a 19mm diameter. The polycarbonate base is treated with a wetting agent to render it hydrophilic, and its smooth, translucent surface captures particles larger than the pore size directly on the membrane face for straightforward analysis. The membrane is produced through a two-step track etch process in which polycarbonate film is exposed to ion particles that create tracks, which are then chemically etched into precise, cylindrical pores, providing tight control over pore size and density.

Key Polycarbonate Track Etch (PCTE) Membrane Characteristics

Hydrophilic surface: Treated with a wetting agent so the naturally hydrophobic polycarbonate readily wets out for aqueous filtration.
Absolute, uniform pores: Precise pore size and density provide flow control and capture of particles larger than the pore size on the surface.
Smooth, glass-like surface: The thin, translucent planar surface suits particle identification by optical or electron microscopy and resists chemical staining.
High strength: Superior tensile strength maintains pore size and density and resists stretching during handling.
Low protein binding and low extractables: Promotes clean, consistent results in assays and high-purity filtration.

Key Construction Characteristics

Material: Hydrophilic polycarbonate track etched (PCTE) membrane.
Format: Plain, ungridded membrane disc, 19mm diameter, 0.2um pore size.
Membrane thickness: 5 to 12 um.
Maximum operating temperature: 140 degrees C (284 degrees F); autoclavable.
Packaging: Nonsterile, supplied 100 per pack.

These discs deliver consistent flow control and reliable particle capture on a clean, well-defined surface, supporting accurate downstream analysis. The thin, smooth film maintains sample integrity for microscopy and high-purity filtration while standing up to repeated handling and autoclaving.