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ResinTech CGS is a light colored, high capacity, gel type sulfonated polystyrene cation resin supplied in the sodium form as moist, tough uniform spherical beads. ResinTech CGS is intended for use in water softening applications. (It is also available as a dark colored product - ResinTech CGS-BL - with identical properties.)
The chart below shows the expected pressure loss per foot of bed depth as a function of flow rate, at various temperatures.
After each cycle the resin bed should be backwashed at a rate that expands the bed 50 to 75 percent. This will remove any foreign matter and reclassify the bed. The chart below shows the expansion characteristics of ResinTech CGS in the sodium form.