Reverse Osmosis System for Clinical Applications. Compact RO System Provides Simple Operation and Versatile Installation. The AmeriWater SRO150 Series is a complete water treatment system designed to provide low conductivity water for the final rinse and disinfection cycle of tabletop washers, freestanding washers and under counter washers. The system includes a reverse osmosis unit with either a 4.5, 9.2 or 14 gallon pressurized tank for storage and delivery. The system can be wall mounted or installed underneath a standard counter sink.