How should Distilled Water be Stored? – and Why?
Why is Distilled Water Storage Important?
Due to its ultra-pure nature, distilled water is particularly susceptible to contamination and changes in its chemical properties. Over time, distilled water can absorb carbon dioxide from the atmosphere, leading to an increase in acidity. This can result in pH levels dropping as low as 4, which is unsuitable for storage in regular plastic containers (e.g., PVC). Additionally, exposure to light and air can promote bacterial growth and introduce impurities, which can impact the water's overall quality and safety.
Best Practices for Storing Distilled Water:
- Choose the Right Container: Depending on the quantity of distilled water you need to store, there are various container options available: Small Quantities: For home use or smaller volumes, glass bottles or containers are ideal. Amber glass bottles (available in 250ml and 500ml sizes) are particularly effective, as they block out UV light, extending the storage life of the distilled water. Large Quantities: For industrial storage or bulk quantities, high-density polyethylene (HDPE) tanks, drums, and bottles have become the top choice. Produced under strict food-grade quality guidelines, HDPE containers offer numerous advantages, including: Strength and impact resistance Corrosion-proof construction Seamless, one-piece design using food-grade approved resin for safe storage. All of our distilled water is sold in HDPE containers to ensure the highest quality storage conditions.
- Store in a Cool, Dark Place: To maintain the purity of distilled water, it should be stored in a cool, dark location, away from direct sunlight and UV exposure. HDPE containers provide the necessary protection against light and some UV rays, ensuring that the distilled water remains unaltered over time.
- Seal Containers Tightly: It is crucial to ensure that your distilled water containers are tightly sealed to prevent exposure to air, which can introduce impurities and encourage bacterial growth. A proper seal also minimizes the risk of contamination from dust or other environmental factors.
- Maintain Cleanliness: Due to its sensitivity to bacteria and dust, it is essential to store distilled water in clean containers. Regular cleaning and sanitisation of storage containers will help preserve the water's purity for longer and prevent potential health risks associated with contaminated water.
Distilled water storage may seem like a simple task, but understanding the importance of proper storage techniques is critical to preserving its purity and preventing contamination for longer. By following the best practices outlined here, you can ensure that your distilled water remains clean, safe, and ready for use whenever you need it.