NIST Collaboration Yields First Certified Reference Materials for Zeta Potential | NIST

NIST has developed two new Standard Reference Materials (SRMs) to help researchers and manufacturers accurately measure the electrical charge on microscopic particles. These are the first materials to certify Zeta potential values, a key indicator of how nanoparticles behave in fluids.

The new SRMs, 1992 and 1993, were created through a collaboration between NIST and the European Commission’s Joint Research Centre. They consist of colloidal silica particles suspended in water, with SRM 1992 suitable for light scattering methods and SRM 1993 for electroacoustic calibration.

Zeta potential determines whether nanoparticles will remain evenly dispersed or clump together, which is important for applications like drug delivery systems, pharmaceutical coatings, pigments, textiles, and more. The availability of these NIST-certified reference materials will help ensure accurate measurements and support the development of products using microscopic particles.

Source: https://www.nist.gov/news-events/news/2021/01/nist-collaboration-yields-first-certified-reference-materials-zeta

Keywords: Zeta potential, nanoparticle, colloidal silica

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