A real property tax lien categorization and rating system and associated methods that facilitate classifications and ratings of tax liens from various counties of numerous states in the country, according to a common referenceable category scheme that facilitates identification of liens having common underlying real property characteristics, investment characteristics or other characteristics. This cartridge can be used for patients with uremia and cartridge fixed to the conventional hemodialysis machine and additionally the electric current applied to the electrodes placed in to the cartridge or electrode connectors placed to the conventional cartridge. At least two independent longitudinally extending lumens are positioned radially of the first lumen, configured to withdraw blood from a patient, and terminate in a longitudinally directed opening in the transition portion.