Separate bed DI consists of one cation tank and one anion tank, also called Dual bed DI. This combination is used when a higher QUANTITY of DI water is required or when the water quality requirement is no greater than 1 megohm/cm. Separate bed DI systems are often used for small humidifiers, incubators and some washers. Mixed bed DI is a mix of both cation and anion resin inside the tank and is used when a higher QUALITY of DI water is required for the application. Mixed bed DI water is more aggressive with the final water quality measuring up to 18 megohm/cm, removing all dissolved ions in the water. Mixed Bed DI is often used in medical applications, life science/biotech research and manufacturing, pharmaceutical and electronics, clean steam humidification, and general laboratories.