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. 2013 Nov 5;6:156. doi: 10.1186/1754-6834-6-156

Figure 1.

Figure 1

pH-dependent net surface charge of Cel and LS. Zeta potential was measured at 25°C using laser Doppler microelectrophoresis. The 0.1 M H2SO4 and 0.1 M NaOH were used for pH adjustment prior to measurements. Cel, cellulase; LS, lignosulfonate.