DI Resin is necessary to reduce Total Dissolved Solids (TDS) to zero and is the last stage of an RO/DI unit. It is unnecessary to use the expensive proprietary DI cartridges that other RO manufacturers sell. Simply buy a refillable DI cartridge if you don't have one already and fill with DI resin. You'll save money and get the same results.
Color Changing DI Resin 1.5 Gal
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Fills 6 standard 10" refillable cartridge
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Changes color when exhausted
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Vacuum packed in foil lined 4mm Mylar bags to preserve quality (see below for more info)
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2 year shelf life (unopened)
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Additives
Aquariums
