Liquatec™ SDF Series 2.5-inch diameter cartridges are now available. The cartridge’s coreless design is an economical solution to pre-filtration for many applications and is used widely as pre-filtration for RO systems and post-filtration for GAC filters. Also used in applications such as ice machines, film processing and beverages, the cartridges utilize proprietary technology to create four separate layers of micron filtration while the outside-in flow allows the outer layer to trap the larger micron particles with much lower pressure drop.