Hanna DiST 1 TDS TesterThe waterproof DiST 1 features a large multi level LCD which displays both TDS and temperature readings simultaneously. An exposed temperature sensor allows for rapid automatic temperature compensated TDS PPM measurements. Temperature can be set to display in ? or ?. The LCD screen has stability and calibration tag indicators. The battery percent level is displayed at start up alerting the user to the remaining battery power that is available. TDS