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. 2017 Dec 12;7:17436. doi: 10.1038/s41598-017-17734-y

Figure 3.

Figure 3

Ratio of swollen weight to initial weight of 10 wt% type A gelatin after 24 h in solution with different pH-values and NaCl concentrations. The pH-values were adjusted by H2SO4 (green), deionized water (grey) and NaOH (red). The NaCl concentrations are represented by different brightness from light to dark for 0, 0.005, 0.05 and 0.5 M. The dashed lines indicate the range of the IEP.