material
sheets
packaging
pack of 50
manufacturer/tradename
Whatman 10401403
L × W
14 cm × 14 cm
pore size
0.2 μm pore size
General description
Nitrocellulose membranes for use in flow-through and blotting applications, providing a small pore size for low nonspecific binding and greater sensitivity of small proteins.
Manufactured using 100% pure nitrocellulose to ensure the highest binding capacity. The surface properties of the membrane ensure superior signal-to-noise ratios without the need for stringent washing conditions. The proprietary Protran nitrocellulose formula is proven to provide excellent shelf life of proteins. Evidence shows proteins maintain molecular recognition activity for five years on Protran.
Protran nitrocellulose (NC) membranes are the most frequently specified transfer media in the world for a wide range of applications. Protran membranes are manufactured using 100% pure nitrocellulose to ensure the highest binding capacity possible. Other membranes referred to as ‘nitrocellulose′ may actually contain large amounts of cellulose acetate which will lower the protein binding capacity. Protran membranes have the best handling strength of all pure nitrocellulose membranes.
They are compatible with a variety of detection methods, including isotopic, chemiluminescent (luminol-based), colorimetric and fluorescent. Unlike PVDF membranes, Protran nitrocellulose does not require a methanol pre-wetting step. This makes Protran the membrane of choice for proteins which prefer aqueous environments. Prior to transfer, the membrane is simply wetted in water, and then placed in the transfer buffer. No other pre-treatment steps are necessary.
High Binding, Low Background:
In addition to high binding capacity, Protran nitrocellulose membranes inherently have very low background. The superior surface properties of the membrane guarantee superior signal-to-noise ratios, without the need for stringent washing conditions.
High Retention of Small Proteins:
The 0.2 μm pore size of the Protran (BA83) nitrocellulose membrane has high surface area, ensuring binding of small proteins below 20 kD by reducing ‘blow-through′. The 0.45 μm pore size membrane (BA85) is ideal for larger molecular weight samples. BA79, with 0.1 μm pore size, is the membrane of choice for smaller proteins below 7 kD. A unique benefit of the proprietary Protran nitrocellulose formula is the proven shelf life of bound proteins. Empirical evidence shows that proteins maintain molecular recognition activity for five years on Protran.
Protran Blotting Sandwiches:
A pre-cut nitrocellulose membrane and 2 sheets of 3MM Chr blotting paper are prepackaged into a sandwich to help save time. This is made with our Protran BA83 or BA85, the highest quality NC membranes available for blotting.
- Binding capacity, 75 - 110 μg/cm2
- High binding, low background
- Triton free matrix
- Universal membrane for blotting - isotopic, chemluminescent, colorimetric and fluorescent detection methods
Protran nitrocellulose (NC) membranes are the most frequently specified transfer media in the world for a wide range of applications. Protran membranes are manufactured using 100% pure nitrocellulose to ensure the highest binding capacity possible. Other membranes referred to as ‘nitrocellulose′ may actually contain large amounts of cellulose acetate which will lower the protein binding capacity. Protran membranes have the best handling strength of all pure nitrocellulose membranes.
They are compatible with a variety of detection methods, including isotopic, chemiluminescent (luminol-based), colorimetric and fluorescent. Unlike PVDF membranes, Protran nitrocellulose does not require a methanol pre-wetting step. This makes Protran the membrane of choice for proteins which prefer aqueous environments. Prior to transfer, the membrane is simply wetted in water, and then placed in the transfer buffer. No other pre-treatment steps are necessary.
High Binding, Low Background:
In addition to high binding capacity, Protran nitrocellulose membranes inherently have very low background. The superior surface properties of the membrane guarantee superior signal-to-noise ratios, without the need for stringent washing conditions.
High Retention of Small Proteins:
The 0.2 μm pore size of the Protran (BA83) nitrocellulose membrane has high surface area, ensuring binding of small proteins below 20 kD by reducing ‘blow-through′. The 0.45 μm pore size membrane (BA85) is ideal for larger molecular weight samples. BA79, with 0.1 μm pore size, is the membrane of choice for smaller proteins below 7 kD. A unique benefit of the proprietary Protran nitrocellulose formula is the proven shelf life of bound proteins. Empirical evidence shows that proteins maintain molecular recognition activity for five years on Protran.
Protran Blotting Sandwiches:
A pre-cut nitrocellulose membrane and 2 sheets of 3MM Chr blotting paper are prepackaged into a sandwich to help save time. This is made with our Protran BA83 or BA85, the highest quality NC membranes available for blotting.
Other Notes
Autoclavable, Manufactured for vertical-flow assays: Removes problems caused by capillary rise., One hundred percent pure nitrocellulose: Provides high binding capacity, Range includes BA79, BA83 and BA85, Small pore structure: Accurate results; low nonspecific binding; greater sensitivity
For flow-through and Western blotting, Southern blotting and Northern blotting assays, small-pore unsupported membranes are ideal as they are highly sensitive with large surface area and high protein binding capacity. Choosing a membrane with a small pore size avoids the small protein migrating too deeply into the membrane surface before binding into the nitrocellulose which causes a loss of signal or sensitivity.Flow-through immunoassays offer a lower degree of integration than lateral-flow immunoassays which makes development and production easier. It may also be easier to develop multi-analyte tests because the spatial position of a capture molecule on the membrane is not linked to the assay dynamics as in a lateral flow assay.Line blot assays are an easy to develop, lab-based assay that can be multiplexed to support limited sample volumes. Confirmatory blots are usually Western blots (e.g., chasing anti-HIV antibodies in patient sera). Southern blot analysis is especially useful for analysis of repetitive sequences because multiple similar sequences in the genome can be analyzed by a single probe.
Legal Information
Protran is a registered trademark of Cytiva
Whatman is a registered trademark of Cytiva
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