Whatman Westran PVDF membranes are available in two formats. The Westran S used for protein sequencing and the Western Clear Signal used for Western Blotting.

Westran S
Western S PVDF is a 0.2 µm pore size hydrophobic membrane designed specifically for protein sequencing applications. The small pore size of this membrane eliminates "blow-through" and increases protein retention over a wide range of molecular weights.

Features and Benefits

• Highest protein binding capacity over (200 µg/cm²) for easy signal detection
• Chemical resistance needed for N-terminal sequencing
• High protein retention even after harsh wash steps
• Maximum capture of proteins during transfers minimizing sample loss
• Smaller pore size for better retention of low molecular weight proteins
• Compatible with use for non-sequencing Western blotting applications
• Available in popular pre-cut sizes for your application

Westran Clear Signal
Western Clear Signal PVDF is a 0.45 µm membrane specifically designed for Western blotting and protein dot-blotting applications.

Features and Benefits

• High protein binding ability (125 µg/cm²) to eliminate "blow-through"and increase signal over a wide range of molecular weights
• Extremely low backgrounds with chemiluminescent and colorimetric applications providing you with clear signals and sharp bands.
• Excellent results with general protein stains such as Coomassie^® Brilliant Blue, Amido Black, and Ponceau S.
• Increased strength (withstands over 400 psi) allows for multiple stripping and reprobing which results in savings.