Colloidal systems — Methods for zeta-potential determination — Part 2: Optical methods
Colloidal systems — Methods for zeta-potential determination — Part 2: Optical methods
This document specifies two methods of measurement of the electrophoretic mobility of particles suspended in a liquid: video microscopy and electrophoretic light-scattering. NOTE Estimation of surface charge and determination of zeta-potential can be achieved from measured electrophoretic mobility using proper theoretical models, which are described in detail in ISO 13099-1.
ISO 13099-2:2025 - "Colloidal systems - Methods for zeta‑potential determination - Part 2: Optical methods" specifies optical techniques to measure the electrophoretic mobility of particles suspended in a liquid. The document covers two measurement methods: video microscopy and electrophoretic light‑scattering (ELS). Results from these optical measurements (electrophoretic mobility) can be converted to zeta‑potential using theoretical models provided in ISO 13099‑1.
This second edition (2025) updates the 2012 version with new terms and definitions, revised instrument configuration illustrations, removal of cross‑beam optics, an updated description of phase analysis light scattering (PALS), and added information on cell constant.
Упомянутые в описании и другие стандарты ISO
ISO 13099‑2:2025 is applicable to laboratories, instrument manufacturers, researchers, and quality professionals who need reliable optical measurement of particle electrokinetics. Typical use cases:
Keywords: ISO 13099-2:2025, zeta‑potential, electrophoretic mobility, electrophoretic light‑scattering, ELS, PALS, video microscopy, colloidal systems, electroosmosis, cell constant.