pH and "measurement_type"

[d-sandborn]

To the best of my knowledge, Calkulate does not currently have the capacity to process titrations with an EMF reading in pH units. The metadata table at tests/data/titration_table.csv denotes a column called "measurement_type" with options of "EMF" and "pH", but I do not believe the program currently utilizes this option. Replacement of mV readings with the corresponding pH values (calculated with the estimated value of emf0 for the titration) results in an error: "Calkulate: ERROR solving '[sample]'!".

[(https://calkulate.readthedocs.io/en/latest/io)/] calls for EMF readings in either mV or pH, but this may be misleading. Might it be useful to either implement support for pH-based titration, or remove references to the same? Support for pH-based titration could be implemented by conversion (i.e. convert/pH_to_emf) with a user-provided value of emf0.

[mvdh7]

Thanks, this was in an older version but now removed. Have deleted the reference to pH in the docs for now.