Now we’re talking. This system uses RO to strip out 95% of the bad stuff, then a smaller DI polisher to catch the last stubborn ions. It’s a tag team. The DI resin lasts way longer because it’s not doing all the heavy lifting.
Here’s the money part: The initial cost is higher—think a few thousand bucks. But your ongoing DI resin costs drop dramatically. You only replace the DI cartridge every few months, not every few weeks. That’s a win for your CFO and your sanity.
The catch? You need space for the RO unit, and it uses some water to rinse the membranes. But for medium-to-large facilities? This is often the sweet spot—cost-effective without being a science project. Seriously, it’s the Goldilocks of DI.
