Polycarbonate Track Etched (PCTE) Membrane Discs, 20um, 13mm, Hydrophilic, Nonsterile, 100/Pk
GVS SKU: 1222072

Featuring a thin, translucent polycarbonate track etched film with precisely defined cylindrical pores, this hydrophilic membrane disc delivers exact 20um surface separation across a 13mm diameter. The polycarbonate film is produced through a two-step process in which it is first exposed to ion particles that create tracks where the polymer is damaged, then chemically etched to open precise, cylindrical pores. A polyvinylpyrrolidone (PVP) treatment makes the naturally hydrophobic polycarbonate hydrophilic, while the smooth, flat surface captures all particles larger than the pore size directly on the membrane face for straightforward microscopic visualization.

Key Polycarbonate Track Etched (PCTE) Membrane Characteristics

• Hydrophilic surface: treated with polyvinylpyrrolidone (PVP) so the polycarbonate film wets readily with aqueous samples.
• Precise cylindrical pores: a defined 20um pore size and controlled pore density provide accurate size separation and reliable flow control.
• Surface capture: all particles larger than the pore size are retained on the smooth, flat surface rather than within the depth of the medium.
• Superior strength: the film maintains pore size and density under load and resists stretching.
• Low protein binding: minimizes sample loss and resists chemical staining to ease microscopic visualization.

Key Construction Characteristics

• Material: Polycarbonate Track Etched (PCTE) film, white, not gridded.
• Format: 13mm diameter membrane disc.
• Sterility: supplied nonsterile.
• Packaging: 100 discs per pack.

The translucent, glass-like planar surface makes this membrane well suited to particle identification and surface sample collection, while the controlled pore structure provides consistent, repeatable filtration. Low protein binding and resistance to staining help preserve sample integrity and keep background interference to a minimum.

Color

White

Diameter

13mm

Grid (Yes/No)

No

Material

Polycarbonate Track Etch (PCTE)

Membrane Color

White

Membrane Thickness (µm)

5 to 20

Pack Count

100

Pore Size (µm)

20

Sterility

Nonsterile

Wettability

Hydrophilic

• General Filtration The defined 20um pore structure provides reliable, repeatable filtration of aqueous samples with predictable flow control.
• Prefiltration The large 20um pore size makes this membrane well suited to capturing coarse particulates ahead of finer downstream membranes.
• Microscopic Surface Analysis The smooth, flat, translucent surface captures particles on the membrane face for direct optical or electron microscopy without dissolving the filter.
• Blood Sample Preparation The precise surface-capture pores support separation of larger cellular components from plasma.
• Assay Flow Control The controlled pore size and density regulate the movement of reagents through assay formats.
• Cellular-Based Filtration The biocompatible PCTE film supports filtration assays requiring high purity and low protein binding.