RO/DI water heating is different.

RO/DI water heating

There are many water heating applications that utilize reverse osmosis/deionized water (commonly known as RO/DI water), including:

-Pharmaceutical applications
-Water purification systems
-Cosmetic and drug packaging
-Ultrasonic cleaning systems
-Parts rinsing
-Food processing, and more

The hot water involved with these operations is a critical part of an even larger process, so it is imperative that the right water heater is used to ensure the job is done efficiently and effectively. What makes hot RO/DI water different than the typical hot water we use for showering at home, washing hands in public restrooms, or doing laundry at the laundromat?

Purity Levels

Plain water simply can’t be used for these special applications or similar processes because of its low resistivity (purity). Low purity water contains high amounts of salts and minerals, leaving behind visible residue, minuscule particles, and debris that is not acceptable in these industries. Depending on the application, any sort of debris left on the final product can have substantial negative effects, even if they are microscopic.

When cleaning medical devices (i.e. implants) or computer microchips the need for hot water of the highest purity is crucial. The high resistivity of this water means it doesn’t leave behind any minuscule particles or fragments. These intricate parts would be compromised or could prematurely fail if any residue is left behind. So for applications such as these, it is important that the highest resistivity ultrapure water is used.

But the majority of RO/DI applications only need low-medium resistivity hot water that removes contaminants from surfaces, those that don’t need to be completely devoid of particles (i.e. washing car parts and certain humidification systems). Here it is acceptable because hot high purity water removes contaminants from surfaces better than low purity cold water, making hot deionized water advantageous for process applications.

Learn more about which materials of construction work best for RO/DI water heating and the pros and cons of the most common materials used in the industry!

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RO/DI water heating