Control of sample separation based on analysis of mobile phase supply from mobile phase container

A control device for controlling a sample separation apparatus for separating a fluidic sample using a mobile phase provided from at least one mobile phase container, the control device comprising:

• an input unit for inputting gross weight information indicative of an initial gross weight of a mobile phase container of the at least one mobile phase container including its mobile phase of the mobile phase container of the at least one mobile phase container and volume information indicative of an initial mobile phase volume in the mobile phase container of the at least one mobile phase container;
• a reduction behavior determining unit for determining a weight and volume reduction behavior according to which weight and volume of mobile phase in the mobile phase container of the at least one mobile phase container are reduced during conveying mobile phase from the mobile phase container of the at least one mobile phase container in the sample separation apparatus;
• and
• a tare weight determining unit for determining a tare weight of the mobile phase container of the at least one mobile phase container based on the gross weight information, the volume information, and the determined weight and volume reduction behavior.