Wiegner effect

https://doi.org/10.1351/goldbook.W06676
Synonymous with suspension effect (in an ion-selective electrode).
Source:
PAC, 1994, 66, 2527. 'Recommendations for nomenclature of ionselective electrodes (IUPAC Recommendations 1994)' on page 2533 (https://doi.org/10.1351/pac199466122527)