Industrial-Grade Mixed Bed DI Resin
The Hydronix Aquatrol™ MED-MB9IG is an industrial-grade mixed bed deionization resin that combines strong-acid cation and strong-base anion resins in a balanced 1:1 volumetric blend. Packed as a full 1 cubic foot bag of virgin media, it strips dissolved ions from your feed water in a single pass to produce ultra-pure, near-zero-TDS water — ideal for RO/DI polishing, spot-free rinsing, and any application where high purity matters. This is a deionization media, not a water-softening resin.
Core Performance Data
Two-Resin Deionization in One Bed
Positive ions swapped for hydrogen
The strong-acid cation resin captures dissolved cations — calcium, magnesium, sodium, and other metals — and releases hydrogen ions (H⁺) in their place.
Negative ions swapped for hydroxide
The strong-base anion resin captures dissolved anions — chlorides, sulfates, silica, and carbonates — and releases hydroxide ions (OH⁻).
H⁺ and OH⁻ form pure water
Because the two resins are intimately mixed, the released hydrogen and hydroxide ions combine into pure H₂O, leaving deionized, ultra-low-TDS water at the outlet.
Media & Handling
| Composition | Blend of strong-acid cation and strong-base (Type I) anion exchange resins |
| Ionic Form (as shipped) | Cation in hydrogen (H⁺) form; anion in hydroxide (OH⁻) form — ready to use |
| Polymer Matrix | Crosslinked polystyrene divinylbenzene (gel type) |
| Grade | Industrial grade — for general high-purity DI and TDS reduction |
| Regeneration | Single-use / non-regenerable in most point-of-use setups; replace bed when exhausted |
| Function | Deionization / TDS reduction (this is not a softening resin) |
| Packaging | 1 cubic foot bag of virgin resin |
When to replace: Mixed bed resin is exhausted when outlet TDS begins to climb or resistivity drops. Placing a mixed bed DI stage after a reverse osmosis membrane dramatically extends resin life, since the RO removes most of the ion load before water reaches the resin.
Where It's Used
RO/DI Systems
Final polishing stage after reverse osmosis for lab-grade, near-zero-TDS water.
Aquarium & Reef
Produces pure top-off and mixing water free of nitrates, phosphates, and silica.
Car Wash & Detailing
Delivers spot-free final rinse water that dries without mineral residue.
Window Cleaning
Feeds water-fed pole systems for streak-free, squeegee-free glass results.
Ultra-Pure Output
Reduces dissolved solids to near zero for 99.99% pure water.
Ready To Use
Ships in H⁺/OH⁻ form — load it and go, no pre-conditioning.
Balanced Blend
Even 1:1 cation/anion mix for consistent, efficient exchange.
Full Cubic Foot
Bulk 1 CF bag for refilling DI tanks and cartridges.
