Types of Cation Resins
There are two primary types:
Strong Acid Cation (SAC) Resin
Functional group: Sulfonic acid
Effective across a wide pH range
Commonly used in:
Water softening
Deionization
Weak Acid Cation (WAC) Resin
Functional group: Carboxylic acid
Effective mainly in removing alkaline earth metals and heavy metals
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