DD is proud to annouce that we are now resellers of CR Spotless Systems

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CR Spotless provides quick and easy washing with no drying.

Fundamentals of Deionization by Ion Exchange.

Deionization is a method used most often by laboratories to produce purified water on demand. All naturally-occurring water contains dissolved mineral salts. In solution, salts separate into positively-charged cations and negatively-charged anions. Deionization can reduce the amounts of these ions to very low levels through the process of ion exchange. Cations are removed by cation exchange resin. It replaces sodium, calcium, magnesium, and other cations with hydrogen ions (H+). This exchange produces acids which must be removed or neutralized by anion exchange resin. Two general types of anion resin are used for deionization: weak base resin and strong base resin. Weak base resin adsorbs strong acids, while strong base resin exchanges chloride, sulfate and alkaline anions for hydroxide ions (OH-). The hydrogen ions from the cation exchange process combine with the hydroxide ions from the anion exchange process to form water (HOH or H2O). Because the deionization process is so effective, the water quality is usually measured by the water's resistance to electric current (in OHM-cm). The end result is purified water that won't leave mineral deposits - water spots - on your car!


DIC20 with cart at $449.95

The DIC-20 provides approximately 300 gallons of mineral-free, de-ionized water based on your input water quality. It consists of two 20 inch de-ionization housings that feature replaceable cartridges that simply slide into the watertight housings. The entire unit is mounted on a powder coated, rust resistant rolling cart that makes it convenient to move into position and store away when finished.


DIC10 with cart at $349.95

The DIC-10 provides approximately 100 gallons of mineral-free, de-ionized water based on your input water quality. It consists of two 10 inch de-ionization housings that feature replaceable cartridges that simply slide into the watertight housings. The entire unit is mounted on a powder coated, rust resistant rolling cart that makes it convenient to move into position and store away when finished.


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