We at PSI Water Filters stock an extensive range of membranes ranging from domestic home membranes to commercial membranes. Whether you are after a membrane for your undersink reverse osmosis water system or your laundry wall mount reverse osmosis system, you can be sure that we will have a membrane that will suit your water filter system. The membranes available at PSI Water Filters have a range of flow rates ranging from a 36 GPD (gallons per day) to 9,000 GPD (gallons per day). We also stock sea water type membranes which are suitable if you have a sea water system. Commercial sea water reverse osmosis membranes will help filter the sea water into pure filtered drinking water. If you need any help choosing the right reverse osmosis membrane, give our experts a call on 1300 305 579.