This study explores the physicochemical changes provoked by the physical transmission of highly diluted (HD) solutions of Arnica montana extract on three receiver solutions differing by their pH. Three dilutions (potencies), one modest (D6), one very high (C30), and another ultra-high (C200) extract of A. montana, were used as a source of HD signal transfer. The HD signal transfer was enhanced by an initial knocking at the start of the experiment and then allowed to interact with the receiver solution for 24 h of exposure. The results confirmed the detectability of the HD signal transfer in solutions with different pH, the general effect of this signal on pH increase, the differential effect of the signal depending on the initial dilution level (potency), and the effect on the decrease in both the electrical voltage in water (ORP) and the conductivity. The overall findings of the study offer valuable new insights and suggest innovative approaches for further research, particularly in detecting the HD signal in solutions with varying pH levels, focusing on interactions with hydroxide and hydronium ions.

Lactose is widely used as a pharmaceutical excipient, yet little is known about how its physicochemical behavior may be influenced by pretreatment history and weak environmental magnetic conditions. In this pilot study, we investigated oxidation–reduction potential (ORP) and UV absorbance of 0.2% aqueous lactose solutions prepared from lactose powders with different pretreatment histories: Active water, Native water, and untreated control. Samples were exposed for 30 min to three static magnetic field conditions: weak geomagnetic field (~4 µT), ambient geomagnetic field (~30 µT), and elevated static field (~750 µT). UV/VIS spectroscopy was performed in the 200–400 nm range, with particular focus on the deep-UV absorption maximum near 200 nm. The strongest differentiation between pretreated samples and control occurred under weak geomagnetic conditions. In this weak-field regime, pretreated lactose solutions showed higher ORP values and a same-direction trend toward increased UV absorbance near 200 nm relative to untreated lactose. Across all samples, both ORP and UV absorbance decreased with increasing magnetic field strength, indicating a consistent field-dependent shift in the overall physicochemical state of the lactose solutions, particularly in redox balance and deep-UV optical response. The same-direction changes in ORP and increased 200 nm absorbance at the group level suggests that weak-field conditions may influence oxidation-related processes, potentially including the formation or stabilization of lactose oxidation products such as lactobionic acid. These findings indicate that lactose-containing aqueous systems may be sensitive to both pretreatment history and low-intensity magnetic environments, with potential implications for pharmaceutical formulation stability, quality control, and biotechnological reproducibility.