The Nephros DSU-D Ultra Filter 70-0235D is a medical approved inline water filter designed for use in commercial and industrial applications. With its model number 70-0235D, this filter cartridge is specifically designed to provide clean and safe water for use in various settings. The Nephros DSU-D Ultra Filter ensures that water is properly filtered to meet the high standards required for medical applications, making it a reliable choice for businesses in the restaurant, food service, and bar and beverage equipment industries.