The MECS Water Conditioner unit is a complete system designed for use with ultrasound measurement systems like the AIMS and OptiSon. It was designed to enhance the accuracy of measurements by providing microprocessor-controlled heating, de-gassing, filtration and de-ionization functions depending on the user's requirements. The system is housed in a standard 19" rack cabinet and can be used independently or can be controlled through a PC's serial port. When connected to a PC, a Windows program serves as the "front panel".