Quick Answer
Store Reverse Osmosis (RO) water in food-grade, airtight containers to prevent contamination and spoilage. Maintain a water displacement system to eliminate air and maintain oxygen levels. Regularly test for pH, TDS, and bacterial growth.
Containment and Storage
When storing RO water long-term, it is essential to use food-grade, airtight containers to prevent contamination and spoilage. Glass bottles with tight-fitting lids are ideal, as they do not leach chemicals into the water like some plastics. The container should be clean and dry before filling, and a lid or cap should be applied immediately to prevent exposure to air.
Water Displacement System
A water displacement system is crucial to maintain a stable oxygen level in the stored water. This can be achieved by leaving a small amount of headspace in the container and using a water displacement tube or a nitrogen gas flush. For example, a 1-inch headspace in a 1-gallon container can be achieved by attaching a water displacement tube, allowing the water to flow slowly and eliminating air pockets.
Regular Testing and Monitoring
Regular testing of the stored RO water is necessary to ensure its quality and safety. This should include pH testing to ensure the water is within a safe range (pH 6.5-8.5), TDS (Total Dissolved Solids) testing to monitor mineral content, and bacterial growth testing to detect any potential contamination. For example, a pH meter can be used to test pH levels, while a TDS meter can provide a reading of the water’s mineral content.
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