METER OF TOTAL ALKALINITY IN SOLUTION Russian patent published in 1997 - IPC

FIELD: potentiometric measurement of alkalinity in analyzed solution. SUBSTANCE: meter includes potentiometric cell with analyzed solution, measurement electrode for determination of pH and auxiliary electrode. Flow cell has ion-selective electrode for detection of pCO₃. Meter is supplemented with unit measuring pH, unit measuring pCO₃, analog-to-digital converter, calculator of concentration of hydroxide ions OH^- calculator of concentration of carbonate ions CO2-3

,, calculator of concentration of bicarbonate ions HCO-3,, adder-calculator of total alkalinity and digital-to-analog converter. Cell is connected to unit measuring pH and unit measuring pCO₃ which are connected to analog-to-digital converter linked to calculator of concentration of hydroxide ions OH^- and calculator of concentration of carbonate ions CO2-3, connected in their turn to calculator of concentration of bicarbonate ions HCO-3,. Calculator of concentration of hydroxyl ions OH^-, calculator of concentration of carbonate ions CO2-3 and calculator of concentration of bicarbonate ions HCO-3 are connected to adder-calculator of total alkalinity connected to digital-to-analog converter. EFFECT: increased accuracy and authenticity of meter. 1 dwg