Hanna Instruments^® HI 98194 pH/ORP/EC/DO Multiparameter Waterproof Meter

Range - pH/mV: 0.00 to 14.00 pH/±600.0 mV; ORP: ±2000.0 mV; EC: 0 to 200 mS/cm (absolute EC up to 400 mS/cm); TDS: 0.0 to 400.0 ppt (g/L) (maximum value depends on the TDS factor); Resistivity: 0 to 999999 Ω•cm, 0 to 1000.0 kΩ•cm, 0 to 1.0000 MΩ•cm; Salinity: 0.00 to 70.00 PSU; Seawater Sigma: 0.0 to 50.0 σt, σ0, σ15; DO: 0.0 to 500.0%, 0.00 to 50.00 ppm (mg/L); Atmospheric Pressure: 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; Temperature: -5.00°C to 55.00°C, 23.00°F to 131.00°F, 268.15 K to 328.15 K. Accuracy - pH/mV: ±0.02 pH/±0.5 mV; ORP: ±1.0 mV; EC: ±1% of reading or ±1 µS/cm whichever is greater; TDS: ±1% of reading or ±1 ppm (mg/L), whichever is greater; Salinity: ±2% of reading or ±0.01 PSU whichever is greater; Seawater Sigma: ±1 σt, σ0, σ15; DO: 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; Atmospheric Pressure: ±3 mm Hg within ±15°C from the temperature during calibration; Temperature: ±0.15°C; ±0.27°F; ±0.15 K. Logging Memory: 45,000 records (continuous logging or log-on-demand of all parameters). Logging Interval: One second to three hours. Power: Four 1.5V AA batteries (included). Battery Life: Approximately 360 hours of continuous use without backlight (50 hours with backlight). Environment: 0°C to 50°C (32°F to 122°F); RH 100%; IP67. Dimensions: 7.3˝ x 3.6˝ x 1.4˝. Weight: 14.2 oz.