Portable After Cation Conductivity analyzers used for offline measurement of after cation conductivity of steam and water samples such as feed water, main steam and condensate in the Steam and Water Analysis System (SWAS). The system is available in trolley-mounted as well as hand-carry configurations for ease of mobility. The analyzer typically measures ACC values in the range of 0.06 to 1 micro siemens/cm and comprises a cation column with resin, sample flow indicator with needle valve, conductivity cell/sensor and a conductivity value display unit. The unit can operate on 220 VAC, 50 Hz power supply or battery power.