The Blue Dragon Virgin DI Mixed Bed Resin comes in vacuum-sealed .25 cubic foot bags / aprox 11lb. Vacuum-sealed bags are an excellent choice for extending the life of your DI resin and creates an airtight barrier that prevents exposure to oxygen. Oxygen can cause premature degradation of DI resin, reducing its effectiveness over time. Eliminating contact with oxygen will help maintain the resin's ion-exchange capacity. This is particularly important in applications where consistent water quality is crucial. Experience the pinnacle of water purification with Blue Dragon's Virgin DI Mixed Bed Resin. This premium resin is untouched and unadulterated, ensuring unparalleled purity in every drop. Its 1:1 strong acid cation and strong base anion resin ratio guarantees comprehensive removal of ions. Ideal for window cleaning, car washing, aquariums, and laboratories, it's your path to spot-free, streak-free, and ultra-pure water. Say goodbye to compromises, and choose the trusted name in water purification—Blue Dragon.