Activity of phosphate ions measured with phosphate electrodes of the second kind.
D055598:Chemical Phenomena; D002621:Chemistry; D004563:Electrochemistry; D004566:Electrodes; D006863:Hydrogen-Ion Concentration; D008433:Mathematics; D008628:Mercury; D010710:Phosphates; D010756:Phosphoric Acids
D010710:Phosphates; D010756:Phosphoric Acids; D008628:Mercury