👉 The reverse fluid, also known as the reverse osmosis (RO) membrane fluid or simply RO fluid, is a specialized solution used in reverse osmosis (RO) systems to maintain the optimal performance and longevity of the membrane. This fluid typically consists of deionized water with added minerals to prevent scaling and corrosion, ensuring the membrane remains free from contaminants and retains its efficiency in filtering water. The correct composition of the reverse fluid is crucial for preventing membrane damage and maintaining the system's overall effectiveness in purifying water by removing impurities like salts, minerals, and other dissolved solids.