Its hollow fiber dialyzer is synthetic. Low Flux Dialyzer implements technology that makes it possible. The membrane is made of POLYNEPHRON™ and is a hollow fiber. Inner diameter and thickness of the membrane are 200?m and 40?m respectively. It characterizes Gamma sterilization. While its housing and header are composed of polypropylene, potting compound is made of polyurethane. Its maximum pressure reaches up to 500mmHg.