Anodic Aluminum Oxide Anisotropic membrane filters, 10nm pore, 25mm dia, pk20

Anodic Aluminum Oxide Anisotropic membrane filters, 10nm pore, 25mm dia, pk20
Anodic Aluminum Oxide Anisotropic membrane filters, 10nm pore, 25mm dia, pk20
Anodic Aluminum Oxide Anisotropic membrane filters, 10nm pore, 25mm dia, pk20 - - alt view 1
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ItemAAOA1025-CA

InRedox Anodic Aluminum Oxide Anisotropic membrane filters, 10nm pore, 25mm 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

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