The Semi-Micro Osmometer K-7400 enables freezing point depression to be measured. Additionally, the total osmolality of physiological and biological liquids, transfusions, and infusion solutions can be determined. The measurement run is completely automated after the sample is injected. The instrument is equipped with an air cooling and an integrated microprocessor. The measuring head is available in two versions, one for glass vials and one for plastic vials with attached cap. A printer can be optionally ordered.