Whirlpool WHEERM Reverse Osmosis Membrane for WHER25 RO

The Whirlpool WHEERM is the UltraEase replacement membrane for the Whirlpool WHER25 Reverse Osmosis System. The Whirlpool WHEERM RO Membrane has been certified and tested against NSF/ANSI standard 58 for the reduction of total dissolved solids (TDS) and organic matter and has a rejection rate of 90-95%. The Whirlpool WHEERM Reverse Osmosis Membrane typically lasts a year, depending on your water's pH level and hardness. The membrane should be replaced after a decrease in water pressure or quality.