Key Features :
Range .0 to 10.00 ppt Resolution 0.1 ppt Accuracy ±1 % full scale (±2 % above 5 ppt)No. Of Cal Points 1Calibration Method Digital, push buttonTDS Factor 0.50 to 1.00 (factory set to 0.71) Automatic TemperatureCompensation (ATC) YesNon-Volatile Memory YesHold Function YesAuto-Off 8.5 mins after last key pressLCD Display 3½ digit single linePower 4 x 1.5 V ‘A76’ micro alkaline batteriesOperating Temperature 0 to 50 ºCIngress Protection IP67 rating ; waterproof