Product Short Description: Extremely high quality. It is produced by means specialist piece of equipment to produce it called a demineralisation plant or a deionisation plant. After completion of chemical treatment . Product Description: Extremely high quality. It is produced by means specialist piece of equipment to produce it called a demineralisation plant or a deionisation plant. After completion of chemical treatment . The incoming water passes over a series of SPECIALIZED RESIN BEADS which remove mineral ions and other impurities from the water. This is why Demineralised Water is also known as Deionised Water; the process removes minerals and ions leaving water which is de-mineralised or de-ionised. Demineralised Water is also known as Demin Water, DI Water and DIW.