How is Hach's deionized water manufactured?

Document ID

Document ID TE4795

Version

Version 5.0

Status

Status Published

Published Date

Published Date 03/19/2019
Question
How is Hach's deionized water manufactured?
Summary
Manufacturing process of deionized water
Answer
The water is first run through a charcoal filter, then run through a reverse osmosis system, and finally run through a mixed resin cation/anion bed. The quality of water is then checked to meet the following specifications (pulled from the Certifcate of Analysis):

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