Siemens Water Technologies offers a variety of filter cartridge replacements and housings to meet specific configurations and filtration needs. The Prepure DP graded density cartridge filter. Prepure DP™ filtration cartridges feature high contaminant loading due to graded density depth filtration media construction. The cartridge is suitable for Food and beverage applications and meets the requirements of Title 21 of the U.S. Code of Federal Regulations for materials in contact with food. All components meet the specifications for biological safety as per the USP for Class VI-121°C plastics (gaskets/O-rings excluded).