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Table 4 Working conditions of the conductometric titrations represented in Fig. 7

From: Conductometric titration as a technique to determine variation in conductivity in perfluorosulfonic acid materials for fuel cells and electrolyzers

Figure 7 23 min 30 min 1440 min
Membrane mass (g) 0.2039 0.2059 0.209
NaOH concentration (M) 0.1807 0.1807 0.1807
Temperature (°C) 19.0 ± 0.1 19.0 ± 0.1 19.0 ± 0.1
Agitation system Nitrogen bubbles Nitrogen bubbles Nitrogen bubbles
Time between determinations (min) 23 30 1440
Total acid capacity (meq/g) 0.967 1.07 0.9173
Absolute error (%) 0.013 0.09 0.06