Redox meter TOA RM-30P

Redox meter TOA RM-30P RM31P redox meter Japanese TOADKK TOA RM-31P redox tester ------- RM-30P redox meter TOA RM-30P Japan TOADKK TOA | Redox meter | RM-30P | RM-31P |?? Redox Tester Features HM-30P / HM-31P waterproof structure (IP67) with data storage function (300 points) and low price of the automatic hold function universal (HM-30P? ??) and High (HM-31P) has analog outputs, with RS-232C interfaces and external printer calibration data can be stored (HM-31P) Measuring range:? PH0.00 ~ 14.00; 0 ~ 99.9 ℃ (30P , 31P) 0 ~ 1999mV (HM-31P) Specifications CM-31P? measure conductivity / resistivity / salinity / temperature? waterproof structure (IP67)? using constant memory? Automatic data storage function (300 points), automatic ? maintain and timer function with analog output, with RS-232C and an external printer interface Measuring range:? 0 ~ 19.99s / m0.05Ω.m ~ 1MΩ.m salinity: 0.00 ~ 4.00%, 0 ~ 80 ℃ RM-30P ? with data storage function (300 points) and automatically maintain and timing functions redox potential difference dedicated waterproof structure (IP67) measuring range: 0 ~ 1999mV; 0 ~ 99.9 ℃???