Nuclepore Hydrophilic Membrane, 0.08um Pore Size, 142mm Circle, 25 Pk SKU: 10419331

Polycarbonate Track-Etched (PCTE) Membrane Filters - 10419331

The Whatman 10419331 combines a controlled pore size distribution with low extractable levels, ensuring the data accuracy that sensitive analytical methods require. Verified 0.08 pore distribution across the Hydrophilic membrane surface guarantees batch-to-batch consistency in particle capture and analyte passage. Together, each membrane disc reflects a manufacturing standard where retention characteristics, physical integrity, and dimensional accuracy are verified before release.

Material Specifications

• Optically clear construction enables direct on-membrane visualization of captured particles without transfer or additional preparation.
• Manufactured with tight pore size control for precise separation of cells and particulates.
• Track-etched Polycarbonate membranes feature perfectly cylindrical pores for absolute fractionation.
• Offer a smooth, flat glass-like surface specifically designed for microscopy analysis.
• Low protein binding and biologically inert surface properties make track-etched Polycarbonate compatible with cell biology and cytology workflows.

Microbial enumeration methods require complete retention at the rated pore size and a surface that supports colony growth without inhibition, and the membrane specifications above confirm both requirements for your culture-based workflows. The precisely etched, cylindrical pores of track-etched polycarbonate provide the sharpest size cutoff of any polymeric membrane, giving you near-absolute retention at the rated pore diameter for applications where size-selective capture is critical. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

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

Bubble Point (psi)

N/A

Color

translucent

Diameter

142mm

Extractables

very low

Filtration Area

63.62cm²

Flow Rate

0.6 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

25

pH Range

2-11

Pore Size (µm)

0.08

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 30 mins

Support Material

None

Wettability

Hydrophilic

• Legionella Recovery - Captures bacteria from hot water samples on a flat plane for direct fluorescent antibody staining and microscope counting.
• Asbestos Analysis - Provides a smooth, flat surface for collecting airborne fibers, allowing for direct counting via phase-contrast light microscopy.
• Liposome Sizing - Used in extrusion devices to force lipid suspensions through exact pores, creating uniform unilamellar vesicles for drug delivery.
• Parasite Detection - Concentrates blood samples to detect microfilariae on a transparent surface, simplifying identification without staining.
• Oceanographic Sampling - Fractionates plankton populations by size in seawater, ensuring precise separation for biomass and diversity studies.
• Chemotaxis Migration - Acts as a precise barrier in Boyden chambers to measure cell migration towards chemoattractants without passive diffusion.