You have numerous options for pretreatment methods for pure water, but what is the best combination to produce Type 2 water?
In our last post, we covered the six methods for pretreating water to make it pure for cleanroom purposes. This pretreatment is a vital stage in water purification, but it’s often overlooked. None of the methods will completely remove contaminants on its own, so it’s imperative that you find the right combination. While the exact best fit for you will depend on the application, there is one combination that is often the best to create Type 2 water: Reverse Osmosis (RO), and Electrodeionization (EDI).
To recap, RO is extremely useful in the first step of the purification process. It removes the majority of broad range of contaminants. Its efficiency, however, does vary among contaminant types.
EDI combines direct electrical current with ion exchange resins as well as selective semi-permeable anionic and cationic membranes. This technology deionizes water effectively, as the electric current continuously regenerates the ion exchange resins.
Using these methods together produces water with consistently low levels of ion and TOC. Having such a consistent quality makes it ideal for producing ultrapure water, as other methods tend to result in polished water that has fluctuating levels of contaminants. These kinds of fluctuations compromise any data that’s pulled using trace and ultra trace analyses.
Of course, once you have chosen your water purification methods, be sure to properly train personnel on use and maintenance of the technology and systems. Consistent monitoring will also ensure you are meeting compliance.
For cleanroom validation and/or certification, Gerbig Engineering Company provides quality services that will help you maintain the success of your business. Call us to discuss your needs at 888-628-0056 or reach out via email: firstname.lastname@example.org.