## 3 Experimental Measurements
### Equilibrium Points Obtained by Convection1 Methods  
The data measured using the three conventional methods are presented in this section, both expressed in the form of values and charts. The results measured in the desiccators with acid solutions are shown in Table 6. Each of the points was measured for at least two weeks until the sample reached a steady state. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & \multicolumn{5}{c}{**Description**} \\ \cline{2-6}  & \multicolumn{5}{c}{**Sorption**} \\ \cline{2-6}  & **50** & **80** & **95** & **80** & **50** \\ \hline AC-4\_1 & 1.11 & 2.16 & 3.92 & 2.61 & 1.66 \\ AC-4\_2 & 1.04 & 1.69 & 3.33 & 2.08 & 1.19 \\ AC-4\_3 & 1.15 & 1.89 & 3.57 & 2.27 & 1.4 \\ AC-4\_4 & 1.17 & 1.91 & 3.59 & 2.34 & 1.45 \\ AC-4\_5 & 1.16 & 2.08 & 3.74 & 2.52 & 1.63 \\ AC-4\_6 & 1.04 & 2.1 & 3.83 & 2.57 & 1.71 \\ average & 1.112 & 1.972 & 3.663 & 2.398 & 1.507 \\ deviation & 0.059 & 0.175 & 0.212 & 0.205 & 0.197 \\ \hline AC-5\_1 & 1.17 & 2 & 3.54 & 2.39 & 1.46 \\ AC-5\_2 & 1.36 & 2.18 & 3.67 & 2.52 & 1.56 \\ AC-5\_3 & 1.21 & 1.97 & 3.48 & 2.3 & 1.32 \\ AC-5\_4 & 1.21 & 1.94 & 3.4 & 2.28 & 1.35 \\ AC-5\_5 & 1.26 & 2.1 & 3.58 & 2.5 & 1.56 \\ AC-5\_6 & 1.26 & 2.05 & 3.57 & 2.47 & 1.57 \\ average & 1.245 & 2.040 & 3.540 & 2.410 & 1.470 \\ deviation & 0.066 & 0.089 & 0.092 & 0.103 & 0.112 \\ \hline AC-6\_1 & 1.27 & 1.96 & 3.51 & 2.38 & 1.45 \\ AC-6\_2 & 1.37 & 2.09 & 3.51 & 2.44 & 1.51 \\ AC-6\_3 & 1.46 & 2.12 & 3.59 & 2.51 & 1.6 \\ AC-6\_4 & 1.4 & 2.07 & 3.54 & 2.43 & 1.55 \\ AC-6\_5 & 1.37 & 2.14 & 3.61 & 2.57 & 1.69 \\ AC-6\_6 & 1.32 & 2.14 & 3.57 & 2.53 & 1.66 \\ average & 1.365 & 2.087 & 3.555 & 2.477 & 1.577 \\ deviation & 0.065 & 0.068 & 0.042 & 0.071 & 0.091 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Results of the sorption in sulfuric acid solutions. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & **Width (mm)** & **Length (mm)** & **Thickness (mm)** & **Mass (g)** & **Density (kg m\({}^{-3}\))** \\ \hline AC-4\_1 & 100.5 & 100.4 & 19.8 & 86.16 & 431.6 \\ AC-4\_2 & 100.8 & 100.2 & 19.7 & 85.98 & 432.5 \\ AC-4\_3 & 100.9 & 100.8 & 19.7 & 86.25 & 429.6 \\ AC-4\_4 & 100.9 & 100.8 & 19.7 & 86.08 & 428.8 \\ AC-4\_5  
Table 7 shows the results from the desicators with saturated salt solutions. The time of the individual points is presented in the table. The total measurement time was approximately 77 days, which represents \(11\) weeks. Figure 5 shows the course of the measured values. While the lower relative humidity levels stabilized rapidly, the higher humidity regions needed a longer time period. Table 8 shows the results measured in the environmental chambers. The time of individual points is again expressed in the table. The entire measurement lasted 74 days, which is \(11\) weeks. Figure 6 displays the time course of the measurement. There was a problem with the climate chamber at a high relative humidity. Condensation occurs on the inner walls of the chamber and the dripping condensate caused contamination of the samples. Samples were later protected by foil, but the measured weights still showed large oscillation and deviation. Although the climate chamber is designed for operation at temperatures between \(-20\) to \(150\)\({}^{\circ}\)C, and the relative humidity lever between 20 to 95%, some areas show considerable instability and a limited duration of operation. These limitations need to be followed during usage according to the working diagram of the