Figure 1
From: Size-selective separation of DNA fragments by using lysine-functionalized silica particles

Plot of the zeta-potentials of SiO2 (square) and Lys-SiO2 particles (circles) versus pH.
From: Size-selective separation of DNA fragments by using lysine-functionalized silica particles
Plot of the zeta-potentials of SiO2 (square) and Lys-SiO2 particles (circles) versus pH.