Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Measuring the Isoelectric Point of Ceramic Powder Suspennsions: A Pre-Standarization Study



M Naito, Vincent A. Hackley, R Wasche


The isoelectric point (IEP) is a key material property for aqueous-based processing of advanced ceramic powders. The IEP characterizes the acid-base behavior of the powder surface, which in turn influences powder dispersion and chemical interactions at the powder surfaces. However, international standards for IEP determination are generally lacking. We describe the preliminary results of an international collaborative pre-standards investigation, in which we examine the influence of various material, instrument and measurement factors on IEP determination in moderately concentrated suspensions. These studies focused on electrokinetic sonic amplitude (ESA), colloid vibration potential (CVI), and particle charge determination (PCD), because of their capacity to analyze opaque suspensions.
Transactions of the American Ceramic Society
No. 15


ceramics suspensions, colloid vibration current, concentrated suspensions, electrokinetic sonic amplitude, isoelectric point, particle charge detection, slurries, standardization, zeta potential


Naito, M. , Hackley, V. and Wasche, R. (2002), Measuring the Isoelectric Point of Ceramic Powder Suspennsions: A Pre-Standarization Study, Transactions of the American Ceramic Society (Accessed May 24, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created December 31, 2001, Updated October 12, 2021