# Construction of the Stand and Experimental Studies of the Iontophoresis Process
## 5 Analysis of Test Results
From the conducted research, it appears that a voltage \(U\) on the electrolyte supply above 1 V only causes an increased movement of electrons in the solution. Increased movement of electrons contributes to an increase in the penetration of medicinal products through the skin. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline  & & & \multicolumn{4}{c}{**Current of the Solution \(I_{p}\) [mA]**} \\ \cline{4-7}
**Solution No. ** & **Voltage \(U\) [V]** & \multicolumn{4}{c}{**Temperature \(T\) of the Solution [\({}^{\circ}\)C]**} \\ \cline{3-7}  & & **26** & **30** & **35** & **38** & **40** \\ \hline
1 & & & 0.153 & 0.215 & 0.300 & 0.315 & 0.283 \\
2 & & & 0.652 & 0.313 & 0  
Figure 6: Influence of the temperature \(T\) of solution no. 2 on the current \(I_{p}\) in the electrolyte for: (**a**) power supply voltage \(U=1\) V, (**b**) power supply voltage \(U=3\) V, (**c**) power supply voltage \(U=5\) V, (**d**) power supply voltage \(U=10\) V.  
Figure 7: Influence of the temperature \(T\) of solution no. 3 on the current \(I_{p}\) in the electrolyte for: (**a**) power supply voltage \(U=1\) V, (**b**) power supply voltage, (**c**) power supply voltage \(U=5\) V, (**d**) power supply voltage \(U=10\) V.  
Figure 8 presents the influence of the temperature \(T\) of solution no. 6 on the current \(I_{p}\) in the electrolyte. The tested influence of the temperature \(T\) of the solution on the current intensity \(I_{p}\) of the electrolyte can be represented by the quadratic functions shown in Figure 7. In the tested case (a), it was observed that, in the temperature range \(T\) of 26 \({}^{\circ}\)C to 40 \({}^{\circ}\)C, the current intensity \(I_{p}\) of the electrolyte increases, reaching a maximum value for the temperature \(T\) of the solution of 40 \({}^{\circ}\)C. It has been observed that, for case (b), in the temperature range \(T\) of 26-30 \({}^{\circ}\)C for the electrolyte, the current intensity \(I_{p}\) of the electrolyte decreases, while, in the range 30-40 \({}^{\circ}\)C, the current intensity \(I_{p}\) of the electrolyte increases. The maximum value of the current density \(I_{p}\) of the electrolyte was reached at a temperature of 40 \({}^{\circ}\)C. However, in cases (c) and (d), it was observed that, as the temperature \(T\) of the solution increased in the range of 26-32 \({}^{\circ}\)C, the value of the current intensity \(I_{p}\) of the electrolyte decreased, reaching a minimum extreme for the temperature \(T\) of the electrolyte of about 32 \({}^{\circ}\)C, and then the value of the current \(I_{p}\) decreased. The maximum current intensity \(I_{p}\) of the electrolyte was found to be approximately equal to \(I_{p}\) = 80 mA and the minimum \(I_{p}\) = 0.01 mA. From the conducted study, it results that voltage \(U\) when the electrolyte is supplied with more than 1 V causes only an increased movement of electrons in the solution. Increased movement of electrons contributes to an increase in the penetration of medicinal products through the skin. Figure 8: Influence of the temperature \(T\) of solution no. 6 on the current \(I_{p}\) in the electrolyte for: (a) power supply voltage \(U\) = 1 V, (b) power supply voltage \(U\) = 3 V, (c) power supply voltage \(U\) = 5 V, (d) power supply voltage \(U\) = 10 V.  
The results of calculations of the electrolyte resistance \(R\) have been rounded to the nearest thousandth. Based on the calculations, it can be observed that, as the voltage on the power supply \(U\) increases, the electrolyte resistance \(R\) gradually decreases. At low voltages \(U\), the current resistance \(R\) is relatively high. The resistance values \(R\) change disproportionately depending on the temperature \(T\) of the solution. The higher the voltage \(U\), the closer the values are to each other and the minimum increase in resistance \(R\) is observed. Figures 8-10 show the resistance graphs \(R\) for selected solutions. Figure 9 presents the influence of the temperature \(T\) of solution no. 2 on the current resistance \(R\) of the electrolyte.