EVAL™ EVOH is a synthetic polymer having both hydrophilic and hydrophobic segments. The hydrophilic segments attract water creating a "dynamic water structure" at the membrane surface, which is considered to reduce blood - membrane interaction. EVAL™ EVOH is free from plasticizers and other production additives.

EVAL™ EVOH has a unique surface that prevents adsorption of not only proteins and platelets, but also medication,anticoagulant,etc.