If you use an RO membrane, the RO membrane has a direct impact on the life-span of the DI. The RO membrane can remove about 95-99% of TDS (minerals) in your water. When a deionization filter is used after the RO membrane, you can expect almost 100% removal of the TDS. Excellent High-capacity, mixed bed, Industrial grade media for deionization of water for industrial, aquatic, and other water treatment applications. Safe for all machines, aquariums: Creates consistent, safe, ultra-pure water for car washing and window cleaning, etc...All naturally-occurring water contains dissolved mineral salts. In solution, salts separate into positively-charged cations and negatively-charged anions. It replaces sodium, calcium, magnesium and other cations with hydrogen ions (H).
Following these precautions, there should be little or no concern regarding the shelf life of the resins being stored. Before any resin stored for prolonged periods of time is placed into service, it is always considered good practice to soak the resin in saltwater for a few hours. Generally recommended Rules of Thumb are that un-regenerated resins be used within five years, regenerated resins used within one year, and low TOC grade resins within a month or two. This item is in the category "Pet Supplies\Fish & Aquariums\Filter Media & Accessories".
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