Nuclepore Hydrophilic Membrane, 3.0um Pore Size, 25mm Circle, 100/Pk SKU: 10418306

Polycarbonate Track-Etched (PCTE) Membrane Filters - 10418306

Designed to deliver reproducibility and confidence across critical sample types, the Whatman 10418306 provides the filtration consistency that method validation demands. Designed for laboratory performance, verified 3.0 pore distribution across the Hydrophobic membrane surface guarantees batch-to-batch consistency in particle capture and analyte passage. As designed, consistent surface properties across the full membrane area support uniform particle capture and reliable results in gravimetric, microscopic, and culture-based analytical workflows.

Material Specifications

• Uniform pore density across the membrane surface ensures representative sampling for environmental and biological particulate analysis.
• Track-etched Polycarbonate membranes feature perfectly cylindrical pores for absolute fractionation.
• Optically clear construction enables direct on-membrane visualization of captured particles without transfer or additional preparation.
• Offer a smooth, flat glass-like surface specifically designed for microscopy analysis.
• Non-sterile configuration is suited for analytical sample preparation, mobile phase filtration, and other workflows where pre-sterilization is not required.

Air monitoring and stack emissions sampling demand a filter medium that withstands the thermal and chemical conditions at your collection point — the material properties described above define the operating envelope for your application. Captured particles sit in a single focal plane on the flat polycarbonate surface, making your microscopic examination faster and particle counts more accurate than with depth filters that trap particles at multiple levels. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

For more information about chemical compatibility, please review our Chemical Compatibility Chart.

Bubble Point (psi)

N/A

Color

translucent

Diameter

25mm

Extractables

very low

Filtration Area

4.91cm²

Flow Rate

20 L (Air)

Grid (Yes/No)

No

Material

Polycarbonate (PC)

Maximum Operating Pressure

Holder-dependent

Maximum Operating Temperature (°C)

140°C

Membrane Thickness (µm)

6–11um

Pack Count

100

pH Range

2-11

Pore Size (µm)

3

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 30 mins

Support Material

None

Wettability

Hydrophobic

• Liposome Sizing - Used in extrusion devices to force lipid suspensions through exact pores, creating uniform unilamellar vesicles for drug delivery.
• Erythrocyte Deformability - Mimics capillary dimensions to test red blood cell flexibility and rheology in clinical hemorheology research.
• Oceanographic Sampling - Fractionates plankton populations by size in seawater, ensuring precise separation for biomass and diversity studies.
• Asbestos Analysis - Provides a smooth, flat surface for collecting airborne fibers, allowing for direct counting via phase-contrast light microscopy.
• Exosome Isolation - Separates extracellular vesicles from larger cell debris using defined pore sizes, preventing contamination in RNA analysis.
• Parasite Detection - Concentrates blood samples to detect microfilariae on a transparent surface, simplifying identification without staining.