PH, MV, Conductivity, TDS, D.O. Temperature and ORP Meter    
    
Using interchangeable probes (sold below) this versatile water quality meter reads PH, mV, conductivity, TDS, D.O. temperature and ORP. Order probes for only the parameter you currently require and add additional probes in the future. Intelligent probes electronically retain calibration information. No recalibration is required when changing probes. The display simultaneously reads temperature in user-selectable ºC & ºF and all measurements are automatically temperature compensated. The RS-232 port enables communication with a computer. Also features automatic shut off, hold and min/max, fold out easel back and a tripod screw. Comes with 9V battery and a hard-shell foam-lined carrying case with room for one or two probes.