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High Purity and Deionized Water Systems

DI Systems create high purity water quickly and affordably.

When you need high purity water for your laboratory, manufacturing, or reefkeeping / aquarium water, a deionization system is an excellent option. Deionized water systems remove nearly all ions from your water, including minerals like iron, sodium, sulfate, and copper. Since these ions make up most non-particulate water contaminants, you'll get high purity water quickly and affordably.

  • US Water Patriot Dual 2.5" x 10" DI System

    US WATER Dual 2.5" x 10" Filtration System for Deionized (DI) Water Applications such as Reefkeeping, Steamers and other Applications where high-purity water is needed.

    Regular Price: $200.00
    Sale Price: $119.95
  • US Water Patriot Dual 2.5" x 20" DI System

    US WATER DI-220-EC Dual 2.5" x 20" Filtration System for Deionized (DI) Water Applications such as Reefkeeping, Steamers and other Applications where high-purity water is needed.

    Regular Price: $350.00
    Sale Price: $209.95
  • US Water 2 GPM Portable Mixed Bed DI System
    US Water 2 GPM Portable Mixed Bed DI System. At a TDS of below 5 PPM, this tank will deliver approximately 7,500 gallons of DI water. You can flow up to 3 GPM intermittently with this system, but the highest quality water will be produced if the flow is kept to below 2 GPM for longer contact times.
    Regular Price: $417.00
    Sale Price: $249.95
  • US Water DI Pod Mini Modular Deionization System

    US Water modular deionization system with color changing resin so you know when it's time to change the cartridge

    Regular Price: $498.00
    Sale Price: $299.00
  • US Water Systems Patriot Dual 4.5" x 20" DI System 1.4 GPM

    US WATER Patriot Dual 4.5" x 20" Filtration System for Deionized (DI) Water Applications such as Reefkeeping, Steamers and other Applications where high-purity water is needed.

    Regular Price: $550.00
    Sale Price: $329.95
  • US Water 3-Stage DI Filtration System | AP310-DIS

    A cost-effective solution to deionize water.

    Regular Price: $550.00
    Sale Price: $329.95
  • US Water Systems 0.5 GPM Three Stage DI Filtration System

    US Water Three Stage Filtration System for Deionized (DI) Water Applications such as Reefkeeping, Steamers and other Applications where high-purity water is needed.

    Regular Price: $600.00
    Sale Price: $359.95
  • US Water 50 to 150 GPD RO-DI System

    6-Stage 50 to 150 GPD Reverse Osmosis & Deionization System

    Regular Price: $748.00
    Sale Price: $449.00
  • US Water Systems 1.4 GPM Three Stage DI Filtration System

    US Water Three Stage Filtration System for Deionized (DI) Water Applications such as Reefkeeping, Steamers and other Applications where high-purity water is needed.

    Regular Price: $833.00
    Sale Price: $499.95
  • US Water Patriot Replaceable Cartridge High-Flow DI Tank
    US Water 5 GPM Mixed Bed DI System.
    Regular Price: $1,158.00
    Sale Price: $695.00
  • US Water Patriot Triplex 2.0 GPM High-Capacity DI Pod System | 320-DI-POD-S
    US Water Patriot Triplex 2.0 GPM DI Pod System
    Regular Price: $1,250.00
    Sale Price: $749.95
  • US Water Dental Office Purification System
    Engineered to provide Distilled Quality Water for dental applications, the US Water Sentry IX Dental Purification System provides a maximum of 20 gallons per day of ultra high purity Deionized (DI) water which is equal to or superior to distilled water… without any electricity or heat. This 9-Stage System delivers water up to 16 meg/ohm quality right from its’ own dispensing faucet.
    Regular Price: $1,667.00
    Sale Price: $999.95
  • US Water Patriot 6.0 GPM High-Flow DI Quad System
    High Flow 6.0 GPM High Flow DI Quad Parallel Deionization System
    Regular Price: $2,492.00
    Sale Price: $1,495.00
  • US Water Viscera-Pod Type II Laboratory Water System | 2-30 lph

    The US Water Viscera-Pod Type II Laboratory Water System is capable of delivering from 2 to 30 liters per hour (lph) which is up to 8 gallons per hour (gph). This is a system that easily produces Type II Lab Grade Water which is often called “Analytical Grade Water" according to ASTM D1193 and ISO 3696 standards.

    Regular Price: $5,825.00
    Sale Price: $3,495.00
  • US Water Viscera-Pod Type II Laboratory Water System | 30-80 lph

    The US Water Viscera-Pod Type II Laboratory Water System is capable of delivering from 20 to 80 liters per hour (lph) which is up to 22 gallons per hour (gph). This is a system that easily produces Type II Lab Grade Water which is often called “Analytical Grade Water" according to ASTM D1193 and ISO 3696 standards.

    Regular Price: $12,492.00
    Sale Price: $7,495.00
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Make High Purity Water with a Deionized Water System

Years ago, high purity water was used only in limited applications. Today, deionized (Dl) and high purity water has become an essential ingredient in hundreds of applications. Just a few include the following:

  • Medical offices
  • Laboratories
  • Pharmaceutical companies
  • Cosmetics companies
  • Large aquariums, fish tanks, and reefkeeping facilities
  • Electronics manufacturing plants
  • Food processing plants
  • Plating and anodizing
  • And even the final rinse at the local car wash!

What Is DI Water?

DI water is water that has had all of the ions removed. Ions are charged particles, meaning that they have a positive or negative electrical charge. Many of the impurities in water are dissolved salts, a type of ion. When water is passed through the DI system, the ions are easily removed, leaving clean, pure water.

Read more about deionized water

How Is DI Water Made?

The technology behind this method for creating high purity water is called "deionization," which simply means that it removes the ions from water. Water deionizers are often combined with other filtering systems, like reverse osmosis and carbon filters, to remove any remaining organic and particulate contaminants.

Read more about the water deionization process

What's the Difference Between DI and Distilled Water?

There are a number of differences between deionized water and distilled water, although both are types of purified water. A deionizer uses cation and anion resins to remove ions, the most common non-particulate contaminants. Distilled water is boiled, and then the vapor is condensed; the solid contaminants are left behind in the distillation system. Water deionization produces a product that is very similar to distillation.

Read about the differences between deionized and distilled water

Water Deionization Systems

At US Water Systems, we offer a number of commercial-grade deionized water systems appropriate for businesses, laboratories, and reefkeeping. Call our experienced Certified Water Specialists for assistance in choosing the right system for your needs.

Water Deionizer Media and Parts

Your deionized water system can't work effectively without clean media, resin cartridges, other DI system parts. We carry several standard sizes of replacement cartridges, mixed bed resin, color indicating resin, and more.

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Our price is lower than the manufacturer's "minimum advertised price." As a result, we cannot show you the price in catalog or the product page.

You have no obligation to purchase the product once you know the price. You can simply remove the item from your cart.