Whatman Westran PVDF (Polyvinylidine Fluoride) membranes are available in two formats: the Westran S used for protein sequencing and the Westran Clear Signal used for Western blotting

Westran S Westran 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 binding over a wide range of molecular weights. Features and Benefits 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 0.2 µm pore size for higher surface area, resulting in better binding of low molecular weight proteins Compatible for use with Western blotting applications Available in popular pre-cut sizes for your application

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

• Protein binding ability over 125 µg/cm²
• 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 Red
• Increased strength allows for multiple stripping and reprobing, which results in savings

Westran Blotting Sandwiches

A pre-cut PVDF membrane and 2 sheets of 3MM Chr blotting paper are prepackaged into a sandwich to help save time.  Sandwiches are available with either Westran S or CS.