12.0 Micron Polycarbonate Track Etch (PCTE) Membrane Filters

The 12.0 micron pore size is specifically optimized for applications requiring the passage of large volumes or the capture of large eukaryotic cells and microorganisms. Because the surface is glass-smooth and non-staining, these filters are the gold standard for automated imaging, chemotaxis, and cytology.

Features:

• Absolute Pore Accuracy - Cylindrical pores provide a true "sieve" mechanism, ensuring consistent retention of particles larger than 12.0 µm
• The ultra-flat topography is ideal for high-resolution microscopic examination and automated cell counting
• Low Protein Binding - Minimal sample loss makes these membranes perfect for sensitive biological assays and blood filtration
• PCTE material is non-cytotoxic, supporting rapid cell migration and microbial growth
• Superior Chemical Resistance - Exhibits low extractables and high thermal stability for versatile laboratory use

Common Applications:

• Chemotaxis: High-porosity membranes allow for the rapid migration of specific cell types in response to chemical stimuli
• Cytology: Ideal for the concentration of cells from body fluids for subsequent staining and microscopic analysis
• Microbial Growth: Reduced incubation times due to the hydrophilic nature and controlled nutrient exchange
• General Filtration: Used in high-purity water filtration and blood assays where low extractables are critical

The Track-Etch Advantage

Unlike traditional "tortuous path" membranes (like nylon or cellulose), Polycarbonate Track Etch (PCTE) membranes act as a true sieve. This is achieved through a precise manufacturing process:

• Ion Bombardment: A thin polycarbonate film is exposed to collimated ion beams, creating microscopic damage "tracks"
• Chemical Etching: The film is passed through an etching solution that dissolves the material along the tracks, resulting in perfectly cylindrical pores

This architecture ensures that the 12.0 µm pore size is consistent across the entire surface, allowing for high-resolution separations and unobstructed viewing of captured cells.