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Anodic Aluminum Oxide Anisotropic membrane filters, 2-4nm pore, 13mm dia, pk20
Anodic Aluminum Oxide Anisotropic membrane filters, 2-4nm pore, 13mm dia, pk20
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Anodic Aluminum Oxide Anisotropic membrane filters, 2-4nm pore, 13mm dia, pk20

Item Number AAOA213-CA
Availability Contact for Availability
Price  $600.00

InRedox Anodic Aluminum Oxide Anisotropic membrane filters, 2-4nm pore, 13mm dia, pk20

Anisotropic Anodic Aluminum Oxide (AAO) contain two layers with different pore structure integrated into a monolithic membrane:

Underlying Support Layer – contains larger pores that provide mechanical strength and high permeance.

Active Layer – an upper thin layer of highly uniform pores

Anisotropic pore structure supports size-based separation in 2 to 10 nm range, and makes anisotropic membranes suitable for nanofiltration and ultrafiltration applications.  Anisotropic AAO membrane filters are currently available with pore diameters of 2-4nm, 5nm and 10nm.

These membrane filters are less brittle than similar ceramic membrane filter products ensuring easier handling, usage and less loss of product or samples during preparation.

Membrane Features

•          Precise and reproducible pore geometries

•          Pore size from 2 nm to 200 nm

•          Narrow pore size distribution, sharp molecular weight cutoff

•          Anisotropic (bi-layer) pore structure

•          Smooth flat surface, low fouling, straight pores

•          Optically transparent when wet, low autofluorescence

•          Surface terminated with -OH-groups for binding protocols

•          Naturally hydrophilic, no extractables or leachables

•          Biocompatible, popular substrate for cell culturing

•          Excellent bath-to-batch consistency

Pore Geometries for Anisotropic AAO Membranes

Parameter

Active Layer

Support

Tolerance

Pore Diameter (nm)

2-4

5

10

100-150

±(10%+2nm)

Pore Period (nm)

6

12

26

250

±(15%+5nm)

Pore Density (cm-2)

3·1012

9·1011

1.6·1011

2·109

±20%

Porosity (%)

5-15

5-15

12

15-20

±3

Attributes of Anisotropic AAO Membranes

Size (mm dia) ±0.2 mm

13, 25

Thickness (µm) ±(10% +1μm)

50

Nominal weight (mg/cm2)

10 to 20

Burst strength (psi)

50  to  200 (depending on pore size) for 50 µm membrane over 3 mm span

Max Service Temp (°C)

400

pH range

5-8

Solvent Resistance

Excellent (can be used with most organic solvents)

Autoclavable?

Yes

Air Permeance (cm/s/Pa at 20°C)

10-8 to 10-4 (depending on pore size and porosity)

Water Permeance (cm/s/Pa at 20°C)

10-10 to 10-6 (depending on pore size and porosity )

Monolithic bi-layer pore structure:

Active layer (1-5% of thickness) with pore diameter 2-10 nm for size separation

Support layer (95%-99% of thickness) with pore diameter 150-200 nm to provide mechanical support with high flow

Applications: nano-, ultra & microfiltration, bioseparation, cell culturing, epiflourescence, electron microscopy, bioanalysis

Active Layer 





Support Layer

Other pore sizes, filter diameters may be available. Please contact SPI Supplies for further information.