Whatman
Nuclepore Hydrophilic Membrane, 2.0um Pore Size, 47mm Circle, 100/Pk SKU: 10418812

Polycarbonate Track-Etched (PCTE) Membrane Filters - 10418812

The Whatman 10418812 combines a controlled pore size distribution with low extractable levels, ensuring the data accuracy that sensitive analytical methods require. Central to its design, precision-manufactured Hydrophobic membrane with a verified 2.0 pore structure delivers consistent retention across the full operating range. As a result, controlled production conditions produce membranes with documented pore size distribution and thickness tolerances, supporting method reproducibility across multiple filter lots.

Material Specifications

• Offer a smooth, flat glass-like surface specifically designed for microscopy analysis.
• Supplied in bulk non-sterile packaging, offering an economical option for routine clarification and general laboratory filtration tasks.
• Optically clear construction enables direct on-membrane visualization of captured particles without transfer or additional preparation.
• Uniform pore density across the membrane surface ensures representative sampling for environmental and biological particulate analysis.
• Manufactured with tight pore size control for precise separation of cells and particulates.

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. In particular, 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. Take control of your sample preparation variables and ensure that your data reflects the true nature of your work, rather than the quality of your consumables.

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

Bubble Point (psi)

N/A

Color

translucent

Diameter

47mm

Extractables

very low

Filtration Area

17.35cm²

Flow Rate

18 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)

2

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 30 mins

Support Material

None

Wettability

Hydrophobic

• Parasite Detection - Concentrates blood samples to detect microfilariae on a transparent surface, simplifying identification without staining.
• 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.
• Exosome Isolation - Separates extracellular vesicles from larger cell debris using defined pore sizes, preventing contamination in RNA analysis.
• Chemotaxis Migration - Acts as a precise barrier in Boyden chambers to measure cell migration towards chemoattractants without passive diffusion.
• Erythrocyte Deformability - Mimics capillary dimensions to test red blood cell flexibility and rheology in clinical hemorheology research.