Labman-LMMP30-Multiparameter (7 in 1)

Built-in real-time clock stamps stored data  to meets GLP standards
pH Range  -2.000~20.000pH
Resolution – 0.001, 0.01, 0.1pH, Selectable
ORP (mV) Range  – 0~ ±1999.9mV
Conductivity  – 0~200mS/cm
TDS Range – 0~10ppt 
Salinity Range – 0~80ppt ,Resistivity Range – 0~100M