Polycarbonate Track Etched (PCTE) Membrane Discs, 0.4um, 142mm, Hydrophilic, Nonsterile, 20/Pk
GVS SKU: 1221389

Featuring a thin, microporous polycarbonate film with precisely defined cylindrical pores, these Polycarbonate Track Etched (PCTE) membrane discs deliver a sharply controlled 0.4um pore size across a 142mm diameter format. Manufactured using a two-step track-etch process that independently controls pore size and pore density, the membrane provides accurate, reproducible separation with particles captured directly on the smooth, flat surface. A polyvinylpyrrolidone (PVP) wetting treatment renders the naturally hydrophobic polycarbonate hydrophilic for spontaneous aqueous wetting. The discs are supplied nonsterile, white, and not gridded in packs of 20.

Key Polycarbonate Track Etched (PCTE) Membrane Characteristics

• Hydrophilic surface: PVP-treated polycarbonate wets readily with aqueous solutions for consistent flow.
• Precise cylindrical pores: Straight-through, track-etched pores provide an exact 0.4um size cutoff and reproducible particle separation.
• Surface capture: Particles larger than the pore size are retained on the smooth, flat surface, ideal for optical and SEM examination.
• Low protein binding and low extractables: Minimizes sample loss and background interference for clean results.
• Thin translucent film: A glass-like surface resists chemical staining to ease microscopic visualization.

Key Construction Characteristics

• Membrane material: Polycarbonate Track Etched (PCTE) film, 5 to 12um thick.
• Diameter: 142mm disc format, white and not gridded.
• Sterility and pack: Supplied nonsterile, 20 discs per pack.
• Thermal tolerance: Autoclavable with a maximum operating temperature of 140 degrees C.

The track-etch structure delivers one of the most accurate pore size distributions available, supporting reliable, reproducible separations. Surface capture on a single plane simplifies particle identification and quantification while maintaining sample integrity. Low non-specific binding and low extractables help preserve critical solution recovery and analytical accuracy.

Color

White

Construction

Track Etched

Diameter

142mm

Grid (Yes/No)

No

Material

Polycarbonate Track Etched (PCTE)

Maximum Operating Temperature (°C)

140

Membrane Color

White

Membrane Thickness (µm)

5 to 12

Pack Count

20

Pore Size (µm)

0.4

Sterility

Nonsterile

Wettability

Hydrophilic

• Microscopy and SEM Sample Prep The smooth, flat surface captures particles on a single plane for clear optical and scanning electron microscope examination.
• General and High-Purity Filtration Precise 0.4um cylindrical pores deliver accurate, reproducible clarification of aqueous samples.
• Blood and Plasma Studies Surface capture supports removal of red blood cells from plasma and related blood assay workflows.
• Particle Analysis and Sizing The exact pore size cutoff enables accurate fractionation and quantification of particulates.
• Microbial Enumeration Bacteria and cells larger than the pore size are retained on the surface for direct counting and analysis.
• Reagent Flow Control Defined pore size and density regulate flow of reagents through assay systems.