Bates–Guggenheim convention

https://doi.org/10.1351/goldbook.B00617
See: Debye–Hückel equation
Source:
PAC, 1984, 56, 567. 'Physicochemical quantities and units in clinical chemistry with special emphasis on activities and activity coefficients (Recommendations 1983)' on page 569 (https://doi.org/10.1351/pac198456050567)