150 GPD membrane features a 98% rejection rate at 65 PSI which makes it the most commonly used membrane when speed is the primary importance. If you require faster water production and have good water pressure this is one of the better options.
BRS generally recommends the use of the 75 GPD DOW membranes because it offers 98% rejection at easier to obtain water pressures. The higher rejection will result in better quality water and lower DI resin consumption.
Flow and rejection rates are based on the following:
- 550ppm soften water
- 65 PSI
- 77 degree water
- 15% Permeate Recovery
- Data taken after 30 minutes of operation
It is very important that the water pressure going into the membrane be at least 65 PSI or the membrane will not function at specified rates.