ISE Portable pH/ISE meters are available in multiple designs and features. The portables include versions with BNC connectors for ISEs and are available with direct concentration readout or those that use the mV scale. The portable with direct ion concentration readout features: ISE's ion weight and charge pre-programmed for Molarity measurements Up to five-point calibration with 6 pre-programmed standards Concentration readout as ppm, ppt, g/L, ppb, μg/L, mg/mL, M, mol/L, mmol/L, % w/v, and user defined