Features: Meter meets with the requirement of international GLP standards. Its features up to automatic calibration, automatic temperature compensation, data storage, timing measurement, clock display, RS-232 output, function setting and self-diagnose etc. There are three different measurement modes: stable display mode; time measurement mode; continuous measurement mode. Equips Conductivity/ATC electrode. Its measurement result is fast and precise. Adopt advanced and original conductivity measurement technology, use 1 pc of conductivity electrode (K=1), it can meet measuring accuracy requirement for range within 0.5μS/cm ~ 200mS/cm by using only one-point calibration. Ability to switch among conductivity, TDS, salinity and resistivity. Multinomial calculation for TDS and salinity to ensure the conversion precision of the full scale. Meter has the only product serial number. Dustproof and waterproof meter meets IP54 standards. All sockets are seal protected by the silica gel caps.