The present invention relates to a Method and a device for adjusting the temperature of medical liquids, comprising: Providing an incoming volumetric flow (Fi) from a fluid supply (1) Seperating the incoming volumetric flow (Fi) into two partial volumetric flows (F1, F2) Adjusting the fluid temperature (T1, T2) of each of the partial volumetric flows (F1, F2) to substantially constant target temperatures (Ttl, Tt2) of the partial volumetric flows and volumetric flow controlled merging of the partial volumetric flows (F1, F2) to an output volumetric flow (Fo).
