methods. To be more correct, phosphate and silicic acid concentrations are also required 10 Previously, pH has most often been decided from DIC and TA (e.g. eleven ). (TA is the acid neutralizing capability of the answer, which isn’t merely associated to pH in seawater 10) Thus, though one can generalize to say that high DIC is often associated with low pH (or high P CO2), more info, e.g. TA, is required to be quantitative.