Calmagite is the common name for
It was first described in 1960:
It is normally used in Ca or Mg titrations with edta by adding
5 drops (≈0.25 mL)
of a 0.1% solution (≈2.8 mM). This means that the indicator concentration
in the solution being titrated is somewhere between 3 and 14
Gordon et al. A microscale spectrophotometric
determination of water hardness,