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Stop microbiological growth within membrane components in your pure water system with this effective and safe preservative! XERO RO Guardian is for long-term and short-term storage.
How to use: Mix with one gallon of pure water or RV anti-freeze, if freezing is possible. Remove the cap on the RO housing and pour directly onto the membrane, cap the waste port, and keep the solution inside the membrane until you are ready to use again.