Question: what is the difference between distilled water and milli q water?
Answer: Milli-Q water is made by passing the source water through mixed bed ion exchange and organics (activated charcoal) cartridges. The source does not have to be distilled or deionized (reverse osmosis) but it will help extending the cartridge life. ... Double Distilled Water has a value between 15 and 18 MΩ cm-1 (@ 25 Â°C).