Siemens Water Technologies offers a variety of filter cartridge replacements and housings to meet specific configurations and filtration needs. The VH series cartridge is a validated, pleated polyethersulphone membrane over a non-woven polyester support layer. Cartridges are available in Code 0, Code 5, Code 7, and Code 10 configurations and are provided in 10, 20, 30 and 40-inch lengths. This cartridge meets current USP Class VI biological test for plastics, with a validation certificate available to support the bacteria challenge results .