Membrane fouling is a major problem for the Membrane Bio-Reactor (MBR) industry. GemFloc has been developed by University of Technology, Sydney researchers to improve overall MBR performance, and to drastically reduce membrane fouling. Derived from a renewable source of low cost raw materials, GemFloc is easily and safely degradable. Water shortages and increased demand for high quality water for reuse will continue to generate market growth in MBRs for municipal and industrial sectors.