High quality 100 gallon reverse osmosis membrane used in RO water purifier: Production characters:*Korea RO membrane*Long service life*100 gallon output capacity *Remove the bacteria,heavy metal,salt,bad mineral substance and other dissolved matter and chemical drug in the running water *0.0001um membrane aperture.*Easy to install and remove Spec.:Item NO. Model Effective area(Ft²(m²)) Removal rate(%) Capacity(GPD) Test pressure(Psi) Test Temperature(°C) 1 1812-50 4(0.4) 95 50 65 25 2 1812-75 4(0.4) 95 75 65 25 3 2012-100 5(0.5) 95 100 65 25 4 2012-125 5(0.5) 95 125 65 25 5 2512-200 10(1.0) 95 200 65 25 6 2512-250 12(1.2) 95 250 65 25 7 3012-300 14(1.4) 95 300 65 25