What is the pH of Distilled Water?

What is the pH of Distilled Water?

Understanding the pH of distilled water is crucial for many applications, from scientific experiments to culinary uses and personal care. Distilled water, known for its purity due to the distillation process that removes impurities and minerals, offers a unique profile when it comes to its pH level. In this article, we will explore the pH of distilled water, how it changes, and how tools like the Elixer Water distiller and TDS meter can help you ensure the highest quality water for your needs.

What is pH?

pH is a measure of how acidic or basic water is. The scale ranges from 0 to 14, with 7 being neutral. pH levels below 7 indicate acidity, while levels above 7 indicate alkalinity. The pH of water is a crucial factor in its suitability for various applications, affecting everything from taste to its impact on machinery and human health.

pH of Distilled Water

The theoretical pH of pure distilled water is neutral at 7. However, when distilled water comes into contact with air, it absorbs carbon dioxide, forming a very weak solution of carbonic acid, which can lower the pH to about 5.5 to 6.5, making it slightly acidic. This slight acidity is generally not a concern for most uses but can be important to consider in sensitive environments such as laboratories or certain industrial processes.

Measuring and Adjusting pH in Distilled Water

For those who need to ensure the pH of their distilled water remains stable, monitoring and adjusting its level can be important:

  • Elixer Water Distiller: Using a high-quality water distiller like the Elixer Water distiller ensures that the water starts off in a pure state. The distillation process removes contaminants and minerals that could otherwise affect the water’s pH, providing a consistent baseline from which any changes or adjustments can be made more predictably.
  • Elixer Water TDS Meter: After distillation, measuring the pH can be effectively complemented by checking the Total Dissolved Solids (TDS) with the Elixer Water TDS Meter. Although TDS meters do not measure pH directly, they help verify the purity of the water, which is closely related to stable pH levels. Low TDS readings typically indicate fewer impurities, which can influence the pH.

Applications of pH-Neutral Distilled Water

pH-neutral distilled water is desirable for many applications:

  • Scientific Research: Many experiments require precise pH conditions to ensure valid results. Distilled water with a neutral pH is often used as a solvent in these cases.
  • Culinary Uses: For foods and beverages that are pH-sensitive, using distilled water can help in maintaining the intended taste and texture.
  • Aquariums: Fish and plant life in aquariums can be highly sensitive to pH levels. Using distilled water can help maintain the stability of the aquarium environment.
  • Skin Care: For personal care products, especially those applied to sensitive skin, distilled water can ensure that no external impurities affect the skin’s pH balance.


The pH of distilled water, while theoretically neutral, can vary slightly due to environmental factors such as carbon dioxide absorption. With the Elixer Water distiller, you can produce consistently pure water, and by using the Elixer Water TDS Meter, you can monitor the purity of your distilled water, indirectly helping you understand and manage its pH level. Whether you’re a scientist, chef, aquarist, or just seeking the best for your health and home, understanding and controlling the pH of your distilled water is key to optimizing its use.

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