Biovision's DiaEasy? dialyzer (6-8 kDa MWCO) can combines two modes of action, 1) dialysis or buffer exchange at sample volumes between 50 and 800 μl and 2) electro-elution of macromolecules from polyacrylamide or agarose gel. They can also be used for several other purposes as shown below. This device allows rapid and high performance at either mode and extracts the macromolecules without any contamination. They are ideal for purification of very small quantities of proteins (up to 0.5 μg), for automated protein sequencing, peptide mapping and amino acid analysis. The DiaEasy? tube's membrane is ultra-clean, sulfur and heavy metal free and EDTA-treated which makes it suitable for molecular biology experiments. These