Resintech MBD-30 Nuclear Grade Mixed Bed DI Resin, 5LB sold by IPW Industries Inc. A five pound bag of ResinTech MBD-30 nuclear grade mixed bed DI resin . This is enough resin to refill FOUR 10 inch clear refillable filters. Five pound bag of mixed bed DI resin for spot free water. This is enough resin to refill (4 +) 10 inch filters. This is mixed bed and color changing resin. Both cation and anion resins are combined in this one bag. Color changes as resin is used up. We also offer bulk Anion and bulk Cation resins. This is enough for 4 refills of our refillable Clear Canister. RESINTECH MBD-30 is a self indicating mixed bed resin. It is a mix of nuclear grade hydrogen and hydroxide form resins. The anion resin is a Type I strongly basic gel resin with an indicator dye that changes from green to orange as the resin exhausts. The cation component is a strong acid sulfonated polystyrene gel type cation exchange resin. Color Change from Green to Orange (when exhausted). Additional Details ------------------------------ Product description: Resintech MBD-30 Nuclear Grade Mixed Bed DI Resin, 5LB sold by IPW Industries Inc. A five pound bag of ResinTech MBD-30 nuclear grade mixed bed DI resin . This is enough resin to refill FOUR 10 inch clear refillable filters. Five pound bag of mixed bed DI resin for spot free water. This is enough resin to refill (4 +) 10 inch filters. This is mixed bed and color changing resin. Both cation and anion resins are combined in this one bag. Color changes as resin is used up. We also offer bulk Anion and bulk Cation resins. This is enough for 4 refills of our refillable Clear Canister. RESINTECH MBD-30 is a self indicating mixed bed resin. It is a mix of nuclear grade hydrogen and hydroxide form resins. The anion resin is a Type I strongly basic gel resin with an indicator dye that changes from green to orange as the resin exhausts. The cation component is a strong acid sulfonated polystyrene gel type cation exchange resin. Color Change from Green to Orange (when exhausted).