In combination with the Compact IC and Professional IC systems, the Dose-in Gradient can be used for the fully automatic determination of anions and cations with the aid of conductivity detection with suppression. The Dose-in Gradient is exceptionally flexible and can produce IC eluents from up to five solutions. The Dose-in Gradient requires a high-pressure pump operating at a constant flow rate and one or more Dosinos. The various dosing rates can readily programmed with the aid of the MagIC Net software. The Dose-in Gradient is simple to use and exceptionally reliable.