0.2 μm PES Filter Cartridges RAFF12201 RAFF12202 RAFF22201 use unique asymmetric hydrophilic PES membrane and are specially designed to remove bacteria from water in the distribution loop with high throughputs and superior microbiological safety. They offer low content of extractable after autoclaving and low TOC (＜500ppb ) after a water flush of 60 liters. Each package contains one single cartridge.