Deionized water 20 litres
Deionized water, also known as demineralized water, is water that has had its mineral ions (such as sodium, calcium, iron, and copper) and dissolved solids removed through a process called ion exchange.
Distilled water, on the other hand, is water that has been purified by boiling it into steam and then condensing the steam back into water. This process removes impurities such as minerals, bacteria, and other contaminants.
Both deionized and distilled water are highly purified forms of water, but the processes used to purify them are different. Deionized water is typically used in laboratory settings or in industrial processes, while distilled water is commonly used in medical applications, humidifiers, and in some consumer products