transition potential

of a redox indicator
https://doi.org/10.1351/goldbook.09053
Potential at the end-point of a redox titration.
Note:
The transition potential is a function of the formal redox potential, the total concentration of the indicator (especially for one color indicators), the depth of the color layer, the minimal observable absorbance change (which depends on wavelength and eye sensitivity), and the absorption coefficient.
Source:
PAC, 2025, 97, 137. (Glossary of terms for mass and volume in analytical chemistry (IUPAC Recommendations 2024)) on page 8 [Terms] [Paper]