Check the listing for details. Water Quality Meter pH ORP Conductivity TDS Salinity DO Dissolved Oxygen Tester. Condition: New. Listed at 831.91 USD. Water Quality Meter pH ORP Conductivity TDS Salinity DO Dissolved Oxygen Tester Note: Battery /Liquid/Powder not Included During The Shipping!!! Introduction: High-performance multiparameter water quality meter contains the 8 measurement modes, the meter is suitable for measuring the pH, ORP, conductivity, TDS, salinity, resistivity and dissolved oxygen. pH Mode: Portable multiparameter water quality meter is equipped with a backlit LCD display.1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers.Automatic electrode diagnosis shows the pH slope and offset. ORP Mode: 1 point offset calibration allows adjusting the displayed value to a known standard.Relative and absolute millivolt modes ensure the reliable ORP measurements. Conductivity/TDS/Salinity/Resistivity Modes: 1 to 5 points calibration with automatic recognition for conductivity standards.Selectable cell constant (K=0.1/1/10), reference temperature (20/25°C), TDS factor, linear and pure water compensations, seawater and practical salinity measurement modes. Dissolved Oxygen Mode: 1 or 2 points calibration using the air-saturated water or zero oxygen solution.Salinity and barometric pressure compensations eliminate the measurement error. Features: Automatic temperature compensation ensures accurate readings over the entire range.Auto-Read function senses and locks the measurement endpoint.Calibration due alarm prompts user to calibrate the meter regularly.Auto-Power Off effectively conserves battery life.Setup menu allows setting the number of calibration points, stability criteria, temperature unit, date and time, etc.Reset function automatically resumes all settings back to the factory defaults.Expanded memory stores or recalls up to 500 data sets.USB communication interface is easy to transfer data to PC.Multi-mode power scheme (batteries, power adapter and USB port) ensures that using the meter smoothly. Specifications: Model Water Quality Meter pH Range -2.000 to 20.000pH Resolution 0.001, 0.01, 0.1pH, selectable Accuracy ±0.002pH Calibration Points 1 to 5 points pH Buffer Options USA, NIST, DIN, 2 custom buffers ORP Range ±1999.9mV Resolution 0.1, 1mV, selectable Accuracy ±0.2mV Calibration Points 1 point Measurement Modes Relative or absolute mV Conductivity Range 0.01 to 20.00, 200.0, 2000µS/cm, 20.00, 200.0mS/cm Resolution 0.001, 0.01, 0.1, 1 Accuracy ±0.5% F.S. Calibration Points 1 to 5 points Calibration Solutions 10µS, 84µS, 1413µS, 12.88mS, 111.8mS Temperature Coefficient Linear (0.0 to 10.0%/°C), pure water Reference Temperature 20/25°C Cell Constant K=0.1, 1, 10 or custom TDS Range 0.00 to 10.00, 100.0, 1000ppm, 10.00, 200.0ppt Resolution 0.01, 0.1, 1 Accuracy ±1% F.S. TDS Factor 0.1 to 1.0 (default 0.5) Salinity Range 0.00 to 80.00ppt, 0.00 to 42.00psu Resolution 0.01 Accuracy ±1% F.S. Resistivity Range 0.00 to 20.00MΩ Resolution 0.01 Accuracy ±1% F.S. Dissolved Oxygen DO Range 0.00 to 20.00mg/L Resolution 0.01, 0.1mg/L, selectable Accuracy ±0.2mg/L % Saturation of Oxygen 0.0 to 200.0% Resolution 0.1, 1%, selectable Accuracy ±2.0% Calibration Points 1 or 2 points Pressure Correction 60.0 to 112.5kPa/450 to 850mmHg, manual Salinity Correction 0.0 to 50.0g/L, manual Temperature Range 0 to 105°C/32 to 221°F Resolution 0.1°C/0.1°F Accuracy ±0.5°C/±0.9°F Offset Calibration 1 point Calibration Range Reading ±10°C General Specifications Temperature Compensation 0 to 100°C/32 to 212°F, manual or automatic Stability Criteria Low or high Calibration Due Alarm 1 to 31 days or off Auto-Power Off 10, 20 or 30 minutes after last key pressed Memory Stores up to 500 data sets Output USB communication interface Connector BNC, 6-pin nimi-DIN, 3.5mm jack socket Display Custom LCD (80×60mm) Power 3×1.5V AA batteries or DC5V power adapter Battery Life Approximately 150 hours (turn off the backlight) Dimensions 170(L)×85(W)×30(H)mm Weight 300g Accessories: HostE201-BNC pH electrodeCON-1 conductivity electrodeTP-10K temperature probeCarrying case