Dear sir. We are currently searching for the adequate method for the isolation and purification of some kind of glucose-like sugar compound for the mixture. And now we presume that the immobilized alpha-glucosidase HPLC column will be very helpful to us. So if you have this kind of column, please contact to us. Thank you. Kim Sun-Ho e-mail : [log in to unmask] CKD phamaceutical co. Seoul. Korea.