What additional process improves type 1 reagent water after distillation?

Type 1 reagent water is considered to be highly purified and is typically produced through distillation. However, to achieve even higher levels of purity and to remove any residual contaminants, additional processes are beneficial. Passing the distilled water through a mixed bed and a 0.2 micrometer filter is an effective method for this purpose.

A mixed bed unit typically contains both cation and anion exchange resins, which further deionize the water by removing any remaining ionic contaminants. This ensures that the water is not only free from larger impurities but also from dissolved ions that could interfere with analytical measurements.

The 0.2 micrometer filter serves to eliminate particulate matter, microorganisms, and any remaining larger contaminants that the distillation process may not have fully removed. Together, these two processes ensure that the water reaches the required high purity standards for analytical procedures, making it suitable for sensitive applications where even trace amounts of impurities can affect results.

In contrast, other options like electrolysis, ozonation, and refrigeration do not specifically target the elimination of dissolved ions or particulate matter in the same efficient way as the mixed bed treatment combined with filtration does. Refrigeration, for example, is more about storage than purification.