An extensive study has been carried out on aqueous ‘extremely diluted solutions’ (EDS). The employed experimental methodologies
were well established physico-chemical techniques: flux calorimetry, conductometry, pH-metry, e.m.f. of suitable galvanic
cell. The obtained results show that the preparation procedure significantly alters the physico-chemical behaviour of such
solutions. Moreover, the analysis of the experimental data vs. the ‘arrow of time’ turned out to be astonishingly important.
In fact some measured physico-chemical parameters evolve with time. Some experimentally measurable physico-chemical properties
of the solvent water were largely affected by both time and the ‘life path’ of the samples. In particular, we evidenced two
new experimental phenomena characterizing the EDS: the presence of a series of maximums in the measured electrical conductivity
vs. the sample age; the dependence of said maximums on the volume of the EDS during its ageing.
All of these new experimental results clearly suggest the presence of an extended and ‘ordered’ dynamics involving the whole
of the water molecules in the liquid. A temporal evolution, featuring three maximums in the course of four years of ageing
and the dependence on the ageing volumes do not fit the framework of classical thermodynamics. It therefore seems appropriate
to interpret these phenomena on the basis of the thermodynamics of dissipative structures, which are far from equilibrium