Reverse Osmosis (RO) double pass station

is a type of water purification system that involves the use of two RO membrane systems in series. In a double pass RO system, the water is first purified by passing it through the first RO membrane system, and the purified water is then passed through a second RO membrane system, resulting in even higher water purity. This type of system is useful in producing water with low total dissolved solids (TDS), and it is often used in pharmaceuticals, laboratory, and dialysis applications. The double-pass process also increases the efficiency of the RO system and prolongs the life of the membranes.