Over the last few years' research about liquid membrane and Technology has become more and more importance due to make various bio sensor and hemo-dialysis with lower capital cost and high efficiency and easy synthesis process for the bulk production and preparation. This book is mainly focous in synthesis of artificial membrane using synthetic raceptor. The Urea value in blood tries to reduce using synthetic receptor Liquid Membrane Technology. This book guide how Calix[4]arenes receptor are useful to reduce urea level in blood through LMT. This book is useful for many research students for whoever work in the field of supra molecules and LMT.