Abstract: In the process for monitoring water, in particular boiler feed water, for organic impurities by measuring the conductivity, a part stream is diverted from a sample water stream and its conductivity is measured. The other part stream evaporated at 300.degree.-500.degree. C.; the vapor is thermally treated at temperatures of 800.degree.-1000.degree. C.; the treated vapor is condensed and the conductivity of the condensate is measured. Subsequently the difference between the measured conductivities is taken.

Abstract: Disclosed is a process for preparing a salt hydrate composition having a phase transition heat greater than the heat capacity of water at a corresponding temperature, for charging a latent heat storage device. The process comprises the steps of providing an acid component of the salt hydrate; providing a base component of the salt hydrate, wherein at least one of the acid or base components comprises a liquid; and mixing the acid component and the base component together to cause a neutralization reaction. The acid and base components are mixed in a ratio and in respective concentrations to produce a salt hydrate solution saturated at the desired phase transition point.