Whatman 6809-5002 Filter Circles, 47mm Dia, Anopore Inorganic Anodisc 47, 0.02 micrometer Pore Size, 50/pk

The 0.02 µm pore size is designed for ultra-fine filtration, allowing retention of nanoparticles, bacteria, and very small contaminants. It is commonly used in applications where maximum filtration precision and sterility are required.

This filter is made from aluminum oxide (Anopore inorganic membrane), which provides a rigid, non-deformable structure with highly uniform pores. This ensures consistent filtration performance and reproducible results compared to polymer membranes.

Yes, Anodisc membranes are widely used in light and electron microscopy because they become transparent when wet and retain particles on the surface. This allows direct observation without transferring samples, improving accuracy and efficiency.

No, these membranes are low protein-binding and free from additives, which helps maintain sample integrity. This makes them ideal for sensitive analytical work, HPLC preparation, and biological samples.

This filter is commonly used in:

Microbiological and sterile filtration
Environmental and water testing
Nanoparticle and contamination analysis
HPLC sample preparation and solvent cleaning

Its precise surface filtration and uniform pore structure ensure particles remain on the surface for accurate analysis rather than being trapped inside the membrane.