Pierce PVDF Transfer Membranes are made of high-quality polyvinylidene difluoride and provide high binding capacity for proteins and nucleic acids for western, Southern, and northern blotting methods. The 0.2-μm pore size is ideal for protein analysis of small amounts of proteins (as little as 10 pmoles), amino acid analysis, and transfer of small molecular weight proteins and peptides. For best results, preactivate the membrane with 100% alcohol.