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Cellulose Nitrate (CN)
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Cellulose Acetate (CA)
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Surfactant-Free Cellulose Acetate (SFCA)
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Mixed Esters of Cellulose (ME, MCE)
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Nylon, Polyamide (NYL)
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Hydrophilic Polyvinylidene fluoride (PVDF)
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Polycarbonate (PC)
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Polyester (PETE)
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Teflon (PTFE)
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Polysulfone (PSF)
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Polyehtersulfone (PES)
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Polyvinyl Chloride(PVC)
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Hydrophilic Polypropylene (PP)
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Acrylic Copolymer
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Aluminum Oxide (Al2O3)
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Silver (Ag)
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Regenerated Cellulose (RC)
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Cellulose Nitrate (CN)
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Index of Infraction:1.512
Membrane Structure: Cast, Spongy
Porosity *: >85%
Clearing Agent(s): Immersion Oil, Toluene
Color: Opaque, White, Black
Surface Texture: Open, Rough
Maximum Temperature: 130&176;C
Clearing Agent's Comments: can be dissolved using DMSO
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Cellulose Acetate (CA)
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Index of Infraction: 1.47
Membrane Structure: Cast, Spongy
Porosity *: >85%
Clearing Agent(s): Immersion Oil, Paraffin Oil, Almond Oil
Color: Opaque, White
Surface Texture: Open, Rough
Maximum Temperature: 120&176;C
Clearing Agent's Comments: can be paritally dissolved with
Acetin:Acetone
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Surfacant-Free Cellulose Acetate (SFCA)
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Index of Infraction: 1.47
Membrane Structure: Cast, Spongy
Surface Texture: Open, Rough
Porosity *: >85%
Color: Opaque, White
Maximum Temperature: 120&176;C
Clearing Agent(s):Immersion Oil, Paraffin Oil, Almond Oil
Clearing Agent's Comments: can be partially dissolved with
Acetin:Acetone
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Mixed Esters of Cellulose (ME,MCE)
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Index of Infraction: 1.51
Membrane Structure: Cast, Spongy
Surface Texture: Open, Rough
Porosity *: >85%
Color: Opaque, White, Black
Maximum Temperature: 130&176;C
Clearing Agent(s): Immersion Oil
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Nylon, Polyamide (NYL)
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Index of Infraction: 1.53
Membrane Structure: Cast, Spongy
Surface Texture: Open, Rough
Porosity *: > 80%
Color: Opaque, White
Maximum Temperature: 125&176;C
Clearing Agent(s): a 3:2 mixture of DMSO and Ethanol,
Immersion Oil
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Hydrophilic Polyvinylidene fluoride (PVDF)
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Index of Infraction: 1.407
Membrane Structure: Cast, Spongy
Surface Texture: Open, Rough
Porosity *: > 70%
Color: Opaque, White/Tan
Maximum Temperature: 130&176;C
Clearing Agent(s): Tetrahydrofuran, Immersion Oil
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Hydrophobic Polyvinylidene fluoride (PVDF)
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Index of Infraction: 1.407
Membrane Structure: Cast, Spongy
Surface Texture: Open, Rough
Porosity *: > 70%
Color: Opaque, White/Tan
Maximum Temperature: 130&176;C
Clearing Agent(s): Tetrahydrofuran, Immersion Oil
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Polycarbonate (PC)
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Index of Infraction: 1.586
Membrane Structure: Track Etch
Surface Texture: Smooth, Flat
Porosity *: > 20%
Color: Translucent, White, Black
Maximum Temperature: 140&176;C
Clearing Agent(s): Water
Clearing Agent's Comments: 4.7 (um) pore size is used for
Erythrocyte Deformability
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Polyester (PETE)
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Index of Infraction: 1.625
Membrane Structure: Track Etch
Surface Texture: Smooth, Flat
Porosity *: > 20%
Color: Translucent, White, Black
Maximum Temperature: 200&176;C
Clearing Agent(s): Water
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Teflon (PTFE)
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Index of Infraction: 1.38
Membrane Structure: Stretched
Surface Texture: Open, Rough
Porosity *: > 75%
Color: Opaque, White
Maximum Temperature: 260&176;C
Clearing Agent(s): Immersion Oil
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Polysulfone (PSF)
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Index of Infraction: 1.64
Membrane Structure: Cast, Spongy
Surface Texture: Open, Rough
Porosity *: > 85%
Color: Opaque, White
Maximum Temperature: 130&176;C
Clearing Agent(s): Immersion Oil
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Polyethersulfone (PES)
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Index of Infraction: 1.633
Membrane Structure: Cast, Spongy
Surface Texture: Open, Rough
Porosity *: > 85%
Color: Opaque, White, Black
Maximum Temperature: 130&176;C
Clearing Agent(s): Immersion Oil
Clearing Agent's Comments: Nalge Nunc International's PES has
no wetting agents
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Polyvinyl Chloride (PVC)
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Index of Infraction: 1.54
Membrane Structure: Cast, Spongy
Surface Texture: Open, Rough
Porosity *: > 85%
Color: Opaque, White
Maximum Temperature: 90&176;C
Clearing Agent(s): Immersion Oil
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Hydrophilic Polypropylene (PP)
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Index of Infraction: 1.49
Membrane Structure: Stretched
Surface Texture: Open, Rough
Porosity *: > 75%
Color: Opaque, White
Maximum Temperature: 121&176;C
Clearing Agent(s): Immersion Oil
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Hydrophobic Polypropylene (PP)
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Index of Infraction: 1.49
Membrane Structure: Stretched
Surface Texture: Open, Rough
Porosity *: > 75%
Color: Opaque, White
Maximum Temperature: 121&176;C
Clearing Agent(s): Immersion Oil
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Acrylic Copolymer
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Index of Infraction: ---
Membrane Structure: Cast, Spongy
Surface Texture: Open, Rough
Porosity *: > 85%
Color: Opaque, White
Maximum Temperature: 90&176;C
Clearing Agent(s): Immersion Oil
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Alumimum Oxide (Al2O3)
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Index of Infraction: 1.60
Membrane Structure: Etched
Surface Texture: Smooth, Flat
Porosity *: > 75%
Color: Opaque, White
Maximum Temperature: 400&176;C
Clearing Agent(s): Water, Immersion Oil
Clearing Agent's Comments: Extremely Brittle
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Silver (Ag)
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Index of Infraction: N/A
Membrane Structure: Sintered
Surface Texture: Smooth, Flat
Porosity *: > 70%
Color: Opaque, Gray
Maximum Temperature: 104&176;C
Clearing Agent(s): N/A
Clearing Agent's Comments: Reusable
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Regenerated Cellulose (RC)
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Index of Infraction:
Membrane Structure: Cast, Spongy
Surface Texture: Open, Rough
Porosity *: > 85%
Color: Opaque, White
Maximum Temperature: 180&176;C
Clearing Agent(s): Immersion Oil
Clearing Agent's Comments:
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* = Porosity is a measure of the percentage of
open pores in the membrane. It is not a measure of the diameter of the pores
but a measure of the number of total pores present.
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