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With the XERO DI Cartridge, you can opt for either a pre-filled or an empty cartridge.
The pre-filled choice offers high-quality virgin resin in a cartridge that's immediately usable upon removal from the box! Simply install it in your XERO Pure, Wash-iT systems, or XERO DI System, and you're good to go! When your TDS reading surpasses 10 ppm, simply replace the resin by refilling the cartridge.
On the other hand, the empty DI cartridge can serve as a spare or a replacement for your system. You can load it with resin to ensure a continuous supply of pure water. Refilling your own resin can often be a more cost-effective option compared to purchasing pre-filled cartridges. This 21" refillable cartridge has a capacity of 1/4 cubic foot of DI resin.