To Color Change or Not to Color Change???

[Bennihanna]

I just talked with Russell at Ocean’s Blend about DI resins and he strongly advocated against the use of color change media. He stated that the some of the material that makes the resin change color ends up in the source water. I was shocked because most resins available are color change. So the question is to color change or not to color change?

[teach]

Originally Posted by Bennihanna

I just talked with Russell at Ocean’s Blend about DI resins and he strongly advocated against the use of color change media. He stated that the some of the material that makes the resin change color ends up in the source water. I was shocked because most resins available are color change. So the question is to color change or not to color change?

Makes sense. Thanks for the info Ben. I'll have to do some research now.

[Loverotties]

I'd stay away too!

[Jadinop]

copied from www.buckeyefieldsupply.com

What’s the difference between color-indicating DI resin and non color-indicating DI resin?

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The inclusion of a water-soluble dye in color-changing resin yields a color change as a general indicator when the resin is exhausted. We carry both color indicating (i.e., color-changing) resin, and non color indicating resin. They are identical resins except for the dye. Use the color-changing feature as a very general indicator only. You can commonly continue to use the resin for weeks or months after it begins to change color. Use a TDS meter to monitor how well the resin is performing, and when its time for a new resin refill. If you have a TDS meter, we recommend the non color-indicating resin. The dye in color-indicating resin can be measured in parts per billion in product water. There are no known harmful effects of the dye, but why not avoid it if the dye isn’t needed