What is the recommended conductivity level for reagent grade water at 25 degrees Celsius?

The recommended conductivity level for reagent grade water at 25 degrees Celsius is 2 mmhos/cm. This standard is significant because reagent grade water is used in laboratory settings where high purity is essential for accurate analytical results. Conductivity is a measure of the ionic content in water; lower conductivity indicates a higher degree of purity, which is crucial for avoiding interference in laboratory analyses, particularly in chemical reactions, titrations, and other sensitive measurements.

Keeping the conductivity level at 2 mmhos/cm ensures that the water is sufficiently pure for most analytical needs without excessive ionic contamination. This level provides a balance that allows for certain minimal ionic presence which may be required for specific types of reactions or analyses while still maintaining overall high purity in the reagent water. This specification helps to ensure reproducibility and reliability in experimental outcomes in a laboratory environment.