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Description, long copy, and specifications.
Filtration media Ion exchange
Deionizer Resin (Blue Green) is a deionization (DI) resin: synthetic ion-exchange beads, normally a premix of cation and anion types, that take dissolved minerals and salts out of water.
Made of: Synthetic ion-exchange resin (DI resin is normally a mix of cation and anion beads)
Form: Resin beads, blue-green
Main job: Removes dissolved minerals and salts (lowers TDS)
Used in: Waslix custom layered cartridges
Cation beads swap hydrogen for positive ions such as calcium, magnesium and sodium, while anion beads swap hydroxide for negative ions such as chloride and sulfate. The hydrogen and hydroxide join to make water, so the dissolved-solids (TDS) reading falls.
Lowers TDS: while the resin is fresh, a TDS meter at the outlet reads close to zero (maker data for similar mixed-bed resins at their rated flow)
Removes hardness: takes out calcium and magnesium, the minerals that form limescale
Reduces dissolved metals and radionuclides: US EPA rules list ion exchange as a best available technology for barium, cadmium, chromium, nickel, radium and uranium, among others
Capacity depends on your water: every dissolved ion uses up resin; one maker's table for a similar resin shows about 300 L of water per litre of resin at 100 ppm TDS, but only about 30 L at 1,000 ppm
Evidence: well established Ion exchange is a standard, well-documented water-treatment process, and US EPA rules name it for the metals and radionuclides above. The figures describe this type of resin from published maker data, not tests of this product.
Chlorine and chloramine damage the resin, so it goes after the chlorine-removing layers and before any layer that adds minerals back.
Layer position: After activated carbon, catalytic carbon or KDF (catalytic carbon where the water is treated with chloramine), and before calcite or other mineral layers
Pairs well with: Activated or catalytic carbon in front of it; Calcite after it to add back some calcium and raise the pH
Keep in mind: It is not meant to remove chlorine, organic chemicals, PFAS, bacteria or particles, and hard water uses it up quickly
Material | Deionizing ion-exchange resin |
|---|---|
Form | Resin beads |
Colour | Blue-green |
Spec source | Product title |
Before first use: Rinse the filled cartridge until a TDS meter at the outlet reads near zero; new resin can give off a faint fishy smell at first
Storage: Keep the bag sealed so the beads stay moist, away from frost, heat, bleach and other strong chemicals
Replacement: Replace when the outlet TDS reading starts to rise; after the filter stands unused, run some water to waste first
It depends on how many minerals your water carries, because every dissolved ion uses up part of the resin. It lasts longest on water that is already low in minerals, such as reverse-osmosis water, and is used up quickly on hard tap water. A TDS meter at the outlet tells you when to replace it.
Not reliably, so use a nitrate-selective resin for that job. As a standard deionizing resin nears the end of its capacity, sulfate can push nitrate it has already taken up back into the water, so the outlet level can end up higher than the inlet.
It is the colour of the resin as supplied. Many deionizing resins are dyed so that they change colour as they are used up, but the change is only visible through a clear housing, so a TDS meter is the more reliable check.
No certification is claimed for this product. Filter media can be certified for material safety (for example to NSF/ANSI 61) and complete systems for performance (NSF/ANSI 42 or 53), but we have not found such a listing for this material.
How well any medium works depends on your water, the flow rate, contact time and the other layers in the cartridge. This page describes the loose medium, not a certified filter system.
Deionizer Resin (Blue Green) is a deionizing ion-exchange resin that removes dissolved minerals and salts, bringing the TDS reading of water close to zero while the resin is fresh. It goes after a carbon or KDF layer and before any mineral layer, and it lasts longest on water that is already low in minerals.
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