Spectrophotometric pH measurements from river to sea: Calibration of mCP for 0 ≤ S ≤ 40 and 278.15 ≤ T ≤ 308.15 K

This new model, appropriate for use with purified mCP, produces pH values that are within ± 0.004 of those obtained using previously published data and purified-mCP models for pure water and seawater.