CALL: A.WIHARTA 081294124885 085778084789 087784022201   Info Produk Top-of-the-line dual parameter meters offer features typically found on much more expensive models! Simultaneously measure your choice of pH, mV, or ISE and conductivity. Datalogging of up to 500 data points with GLP compliance Wireless IrDA communication for truly waterproof interfacing capabilities Ranges Conductivity: 0 to 500.0 mS, ± 1% FS ( resolution 0.05% FS) TDS: 0 to 500 ppt, ± 1% FS ( resolution 0.05% FS) Salinity: 0 to 80 ppt Resistivity: 0 to 20.00 M© Dissolved Oxygen: 0 to 600% or 49.49 mg/ L Temperature: -10 to 110° C, ± 0.5° C ( resolution 0.1° C) 14 to 230° F, ± 0.9° F ( resolution 0.1° F) Great for salt water testing.