... /9.18 or USA, pH4.01/7.00/10.01 LIDA220 pH MeterPORTABLE pH/mV/oC/oF METERLIDA220 Portable pH/mV ... can measuretemperature of solution and can compensate temperatureautomatically. Operational Message:LIDA220 with function of operational message. Whenyou need a certain setup ...