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Thumbnail Filmstrip of Polycarbonate Track Etch Membrane Disc Filters, 0.4um, 19mm, Nonsterile, 100/Pk Images
Featuring a thin, microporous polycarbonate track etched (PCTE) film with precisely defined cylindrical pores, this 0.4um, 19mm membrane disc delivers exact surface capture for high-purity and general filtration. Though polycarbonate is naturally hydrophobic, the membrane is treated with a wetting agent (PVP) to render it hydrophilic, supporting reliable wetting with aqueous samples. The translucent film presents a smooth, flat surface so all particles larger than the pore size are captured on a single plane, an arrangement well suited to microscopy, particle analysis, and sample preparation. Each disc measures 0.005 to 0.02mm in thickness and ships nonsterile, 100 per pack.
Key Polycarbonate Track Etch (PCTE) Membrane Characteristics
- Hydrophilic wettability: PVP treatment converts the naturally hydrophobic polycarbonate film for consistent wetting with aqueous fluids.
- Precise cylindrical pores: a two-step track-etch process yields tightly controlled 0.4um pore size and density for accurate size separation.
- Surface capture: a smooth, flat film retains all particles larger than the pore size on its surface for clear viewing and analysis.
- Low protein binding: negligible adsorption and absorption of filtrate help preserve sample integrity.
- Microscopy friendly: the translucent film resists chemical staining to ease optical and electron microscopy.
Key Construction Characteristics
- Membrane material: polycarbonate track etch (PCTE) film.
- Diameter: 19mm disc format.
- Thickness: 0.005 to 0.02mm, plain (not gridded).
- Sterility and pack: nonsterile, supplied 100 per pack.
- Maximum use temperature: 140C (284F).
This membrane delivers precise, repeatable surface capture for demanding analytical workflows. The smooth film, low non-specific binding, and tightly controlled pore structure help maintain sample integrity from filtration through downstream observation. With consistent wetting and clean visualization, it provides dependable performance across general filtration and microscopy applications.
- Color
- White
- Diameter
- 19mm
- Grid (Yes/No)
- No
- Material
- Polycarbonate Track Etch (PCTE)
- Maximum Operating Temperature (°C)
- 140
- Membrane Color
- White
- Membrane Thickness (µm)
- 5 to 20
- Pack Count
- 100
- Pore Size (µm)
- 0.4
- Sterility
- Nonsterile
- Wettability
- Hydrophilic
- Microscopy Sample Preparation The smooth, flat surface captures particles on a single plane for clear viewing under optical or electron microscopes.
- Particle Analysis Precisely controlled 0.4um pores enable exact particle sizing and surface capture for accurate enumeration.
- General Filtration Hydrophilic PCTE film supports clarification and high-purity filtration of aqueous samples.
- Blood and Cell Studies Captures cells larger than the pore size for blood assays and fractionation work.
- Reagent Flow Control Defined cylindrical pores provide consistent flow control of liquids through the membrane.
- Microbiological Sample Prep Surface capture and low non-specific binding support microbial collection and analysis.