di-basics


Ion exchange resins may be safely stored for prolonged periods of time in areas where the ambient temperature is between 4-28°C (41-80°F).

Following these precautions, there should be little or no concern regarding the shelf life of the resins being stored. Physical damage of ion exchange resins due to dehydration may occur in cases of extreme moisture loss during storage.

In rare cases, it may be necessary to store ion exchange resins in their less stable forms. In these instances, it is important that precautions be taken to assure that the ion exchange resins are properly stored in a hydrated condition at temperatures, which rarely exceed 40°C (104°F) for prolonged periods of time.

During the shipment to and storage in areas where temperatures drop below 0°C (32°F), storage precautions should be taken to avoid subjecting ion exchange resins to repeated freezing-thawing conditions. Although a few freeze-thaw cycles are generally harmless, repeated freezing-thawing of ion exchange resins, regardless of the forms in which they are supplied, could bring about physical attrition of the ion exchange resin by physically breaking the resin beads. Generally recommended Rules of Thumb are that un-regenerated resins be used within five years, regenerated resins used within one year, and low TOC grade resins within a month or two.



Common Causes of DI Resin Failure

The lifespan of DI resin is relatively short, with optimal output typically lasting only 1 to 2 minutes. It is crucial to carefully follow instructions to understand the resin's functionality and make an informed decision about investing in such systems.

When DI resin fails to produce water with zero or low Total Dissolved Solids (TDS), there are several potential causes. Let's explore some common reasons behind this issue:

  1. If you are using this DI system for aquarium purposes, ensure that your membrane is functioning optimally with a 96-97% rejection rate to prolong the life of the resin.
  2. High Incoming Levels: If you use this DI for a car wash system with High city water exceeding 150 PPM, this DI will not achieve a low PPM reading. Avoid purchasing it in such cases.
  3. Resin Exhaustion: DI resin becomes exhausted and loses its effectiveness over time or after processing a significant volume of water. Check usage against recommended PPM guidelines for replacement.
  4. Improper Usage: The lifespan of resin is brief, and any incorrect setup or application can lead to a short working period. Follow instructions meticulously to thoroughly grasp the resin's operation before investing in such systems.
  5. Car Washing Technique: Avoid using DI water for washing cars directly; instead, wash with regular tap water and use DI water for a final rinse. Neglecting this step can lead to dissatisfaction with system performance.
  6. Optimal DI Water Usage: Utilize the misting valve to control DI water usage efficiently. Without it, excessive DI water consumption during car washing can occur, leading to premature exhaustion.
  7. High Flow Rate Considerations: If water passes through the resin too swiftly (fast flow), insufficient contact time for ion exchange can result in lower purity water output (resulting in a high PPM reading).
  8. Water Temperature and Composition: Elevated temperatures can influence ion exchange efficiency, requiring careful consideration.
  9. Proper Packing and Channeling: Inadequate resin packing or channel formation within the container can hamper effective ion exchange, potentially due to settling or improper filling.

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