Oreck Assail A Cell Cleaner 1907 #32358 by Oreck,20oz Oreck Assail-Acell Institutional Air Purifier Cell Cleaner. Advanced Formula Cleans all Oreck Air Purifier Collector Cells, including the Truman Cell. Heavy Duty Alkaline Detergent Cleaning Power. Liquefies Residues and Deposits. Clean Rinsing. Pleasant Lemon Fragrance. Special Soft Touch, Any-Which-Way Sprayer