What is the difference between deionized water, distilled water and deminerlized water?
Distilled water has virtually all of its impurities removed through distillation. Distillation involves boiling the water and then condensing the steam into a clean container, leaving nearly all of the solid contaminants behind. Distillation produces very pure water but also leaves behind a leftover white or yellowish mineral scale on the distillation apparatus, which requires that the apparatus be frequently cleaned. For many applications, cheaper alternatives such as deionized water are used in place of distilled water. Deionized water (also known as demineralized water) is water that has had its mineral ions removed, such as cations from sodium, calcium, iron, copper and anions such as chloride and bromide. Deionization is a physical process which uses specially-manufactured ion exchange resins which bind to and filter out the mineral salts from water. Because the majority of water impurities are dissolved salts, deionization produces a high purity water that is generally similar to
Most of the time, nothing – since water is deionised and demineralised by distilling it. However, in some cases, where the water has its ions removed not by boiling it but by another means (for example, via a centrifuge), there is bacteria remaining in demineralised and deionised water, which isn’t present in distilled water as it’s been boiled.
