ISO 13317-4:2014

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The provided ISO standards relate to particle size analysis and zeta potential determination in colloidal systems. ISO 13317-3:2001 [3, 4, 13] and ISO 13317-4:2014 [1, 7, 16] focus on particle size distribution using gravitational liquid sedimentation methods, with part 3 utilizing X-ray techniques and part 4 employing a balance method. ISO 13099-2:2012 [6, 12, 18] outlines optical methods for determining zeta potential in colloidal systems, including video microscopy and electrophoretic light scattering.