MULTIPARAMETER WATER QUALITY METER The HI98194 is a waterproof portable logging multiparameter meter that monitors up to 12 different water quality parameters including 6 measured and 6 calculated. The microprocessor based multi-sensor probe allows for the measurement of key parameters including pH, ORP, conductivity, dissolved oxygen, and temperature. The probe transmits readings digitally to the meter, where data points can be displayed and logged. The complete system is simple to setup and easy to use. The HI98194 is supplied with all necessary accessories and packaged in a durable carrying case. Specifications: pH Range:     0.00 to 14.00 pH pH Resolution:     0.01 pH pH Accuracy:     ±0.02 pH pH Calibration:     automatic one, two, or three points with automatic recognition of five standard buffers (pH 4.01, 6.86, 7.01, 9.18, 10.01) or one custom buffer mV Range:     ±600.0 mV mV Resolution:     0.1 mV mV Accuracy:     ±0.5 mV ORP Range:     ±2000.0 mV ORP Resolution:     0.1 mV ORP Accuracy:     ±1.0 mV ORP Calibration:     automatic at one custom point (relative mV) EC Range:     0 to 9999 µS/cm; 0.000 to 200.0 mS/cm (absolute EC up to 400.0 mS/cm) EC Resolution:     auto-ranging: 1 µS/cm from 0 to 9999 µS/cm; 0.01 mS/cm from 10.00 to 99.99 mS/cm; 0.1 mS/cm from 100.0 to 400.0 mS/cm; auto-ranging (fixed mS/cm): 0.001 mS/cm from 0.000 to 9.999 mS/cm; 0.01 from 100.0 to 400.0 mS/cm ; manual: 1 µS/cm; 0.001 mS/cm; 0.01 EC Accuracy:     ±1% of reading or ±1 µS/cm whichever is greater EC Calibration:     automatic single point, with six standard solutions (84 µS/cm, 1413 µS/cm, 5.00 mS/cm, 12.88 mS/cm, 80.0 mS/cm, 111.8 mS/cm) or custom point TDS Range:     0 to 9999 ppm (mg/L); 0.000 to 400.0 ppt (g/L) (maximum value depends on TDS factor) TDS Resolution:     manual: 1 ppm (mg/L); 0.001 ppt (g/L); 0.01 ppt (g/L); 0.1 ppt (g/L); 1 ppt (g/L); auto-ranging: 1 ppm (mg/L) from 0 to 9999 ppm (mg/L); 0.01 ppt (g/L) from 10.00 to 99.99 ppt (g/L); 0.1 ppt (g/L) from 100.0 to 400.0 ppt (g/L); auto-ranging (fixed ppt): TDS Accuracy:     ±1% of reading or ±1 ppm (mg/L), whichever is greater TDS Calibration:     based on conductivity calibration Resistivity Range:     0 to 999999 Ω•cm; 0 to 1000.0 kΩ•cm; 0 to 1.0000 MΩ•cm Resistivity Resolution:     dependent on resistivity reading Resistivity Calibration:     based on conductivity calibration Salinity Range:     0.00 to 70.00 PSU Salinity Resolution:     0.01 PSU Salinity Accuracy:     ±2% of reading or ±0.01 PSU whichever is greater Salinity Calibration:     based on conductivity calibration Seawater σ Range:     0.0 to 50.0 σt, σâ‚€, σ₁₅ Seawater σ Resolution:     0.1 σt, σâ‚€, σ₁₅ Seawater σ Accuracy:     ±1 σt, σâ‚€, σ₁₅ Seawater σ Calibration:     based on conductivity calibration DO Range:     0.0 to 500.0%; 0.00 to 50.00 ppm (mg/L) DO Resolution:     0.1%; 0.01 ppm (mg/L) DO Accuracy:     0.0 to 300.0% saturation: ±1.5% of reading or ±1.0% saturation whichever is greater, 0.00 to 30.00 ppm (mg/L): ±1.5% of reading or ±0.10 ppm (mg/L), whichever is greater, 30.00 ppm (mg/L) to 50.00 ppm (mg/L): ±3% of reading, 300.0 to 500.0% saturation: ±3% of reading DO Calibration:     automatic one or two points at 0 and 100% or one custom point Atmospheric Pressure Range:     450 to 850 mm Hg; 17.72 to 33.46 in Hg; 600.0 to 1133.2 mbar; 8.702 to 16.436 psi; 0.5921 to 1.1184 atm; 60.00 to 113.32 kPa Atmospheric Pressure Resolution:     0.1 mm Hg; 0.01 in Hg; 0.1 mbar; 0.001 psi; 0.0001 atm; 0.01 kPa Atmospheric Pressure Accuracy:     ±3 mm Hg within ±15°C from the temperature during calibration Includes: (1) HI7698194 probe (1) HI7698194-1 pH/ORP sensor (1) HI7698194-3 EC sensor (1) HI7698194-2 DO sensor (1), HI 76981942 Probe maintenance kit (HI 7042S DO electrolyte solution,, DO membrane caps (5), O-rings for sensors (5),syringe with grease to lubricate the O-rings) (1) HI9298194 Hanna PC software (1) HI920015 micro USB cable (4), 1.5V AA batteries (1), instruction manual (1) Quick start guide (1) Quality certificate (1) Rugged carrying case with custom thermoformed insert.