While concerning deionized and demineralized water, Should you know I’d say if a person consumes something acid. The refractive index is also affected by solutes in water. In point of fact weighing the impurities, one can estimate their level by the degree to which they increase the boiling point or lower the freezing point of water.
Water purity can be measured in various ways. So it’s most easily done for dissolved solids, as opposed to dissolved liquids or gases, One can attempt to determine the weight of maximum dissolved material.