BPA & BPS free. Dishwasher safe. Alkaline: The Enviro Products Alkaline Pitcher Filter raises pH to 8.5-9.5 by adding the perfect balance of naturally ionized magnesium, potassium, calcium, and sodium. Alkaline: 8; 9; 10. Antioxidants: The Enviro Products Alkaline Pitcher Filter adds negative hydroxyl ions, which lowers the ORP (oxidative reduction potential) (ORP measures the level of antioxidants in water [the lower the number, the better]) giving the water molecules a negative charge. Water from the Enviro Products Alkaline Pitcher Filter has an ORP rating from -200 to -400. www.newwaveenviro.com. Filtration: Each cartridge can alkalize and filter up to 300 liters of water. For optimal performance replace filter every 2 months. Includes digital indicator to remind you when to replace the cartridge. How it Works: 1. Activated carbon reduces chlorine: improves taste and odor. 2. Ion Exchange Resins - additional level of purification: ensures that water is fresh and clear. 3. Negative potential particles increases antioxidant potential. 4. Far infrared ceramic balls mineralizes and energizes. 4 Stage Process: Turns tap water into alkaline and ionized water. Restructures. Filters. Ionizes (antioxidants). Alkalizes.