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ASSE LEC #2008-2021 (Download)

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ASSE LEC #2008-2021
Listing Evaluation Criteria for Point of Entry Anion Exchange – Nitrate Reduction

The water treatment systems covered in this ASSE LEC 2008 shall be self-regeneration anion exchange systems designed to reduce nitrate from drinking water. The systems shall use anion exchange media that prevents nitrate dumping. Depending on the influent water quality, anion exchange systems, if not regenerated correctly, can dump or increase the amount of nitrate in the drinking water if other anions such as sulfates are exchanged by the resin. Non-regenerating residential water treatment systems designed to reduce nitrates shall be tested to NSF/ANSI 53.

A hard copy version of this standard is also available.

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