A heating tower apparatus for heating a liquid having an air flow inlet stream and a first air flow outlet and a second air flow outlet. A robotic platform having a main frame and at least one obstacle climbing flipper with a robotic arm. A substrate surface may be contacted with a vapor phase metal coordination complex such that a layer is formed on the surface comprising the metal coordination complex bound to the surface by the metal. Blood flow is quantified using low field MR spectroscopy and an RF excitation pulse with a frequency which corresponds to the resonance of the dissolved phase 129Xe. The device also include a system for removing or standardizing the volatile substances that may be present with the condensate.