GAOTek Conductivity Electrode Tester

GAOTek Conductivity Electrode Tester is for water quality professionals who want to perform electrochemical analysis for field and lab environments.




GAOTek Conductivity Electrode Tester is for water quality professionals who want to perform electrochemical analysis for field and lab environments. Our new portable platform will allow you to collect intuitive, accurate measurements, manage data, and easily review results, while supplying an IP67 robustness rating. A robust and intuitive range of portable meters, instilling confidence in reporting and managing your results.  



  • Simplified calibration process with on-screen guidance  
  • Easy data transfer via USB or optional Bluetooth  
  • Enhanced data validation with Claros Data Management software  
  • Versatile Intellectual smart sensors for various applications  
  • Reliable performance, accuracy, and response times  
  • Automatic recognition and calibration history retention for smart probes  
  • Ideal for both laboratory and field use  


Technical Specifications 

Working Frequency   60 KHz, sine wave  
Measurement Range for Conductivity   7.76% IACS to 112% IACS, or 4.5 MS/m to 65 MS/m, or resistivity 0.01538 Ω•mm²/m to 0.22222 Ω•mm²/m  
Resolving Power   0.01% IACS (when <51% IACS); 0.1% IACS (51% IACS to 112% IACS)  
Measuring Precision   ±0.5% reading  
Lift-off Effect   Probe compensation 0.0197 in (0.5 mm)  
Temperature Measurement   32 °F to 122 °F (0 °C to +50 °C)   
Accessories   USB charger, power cable, clips  
Auto-buffer Recognition   Yes  
Backlight   Yes  
Barometric Pressure Measurement   Automatic compensation of DO when using an LDO or LBOD probe  
Calibration Intervals/Alerts/Reminder   Off, selectable from 2 hours to 7 days  
Certifications   CE, FCC, ISED, RCM, KC, ETL Verified: US DOE/ NRCan Energy Efficiency, RoHS  
Conductivity Calibration   Demal (1 D/0.1 D/0.01 D); Molar (0.1 M/0.01 M/0.001 M); NaCl (0.05%; 25 µS/cm; 1000 µS/cm; 18 mS/cm); Standard Sea water; User-defined  
Conductivity Measurement   Temperature correction: None; Linear; NaCl Non-Linear Natural Water  
Custom Calibration Standards   Yes  
Data Export   USB connection to PC or USB storage device (limited to the storage device capacity)  
Data Storage   10,000 data points  
Display   Up to 3 parameters at a time, dependent on HQ model  
Display Type   536 x 336 Mono-TFT  
DO Measurement Range   0.1 mg/L to 20.0 mg/L (ppm), 1% to 200% saturation  
DO Resolution   0.1  
Electrode Type   Interlocal Standard Laboratory or Rugged Field  
Enclosure Waterproof Rating   IP67 (with battery compartment installed)  
Environmental Conditions   Relative Humidity: 90% (non-condensing); Temperature: 32 °F to 140 °F (0 °C to 60 °C)  
GLP Features   Date; Time; Sample ID; Operator ID, Calibration  
Measurement Method   Probe-specific programmed method settings  
Model   HQ2200 Multi/2 Channels  
mV Measurement at Stable Reading   Yes  
mV Measurement Range   Yes  
mV Resolution   0.1 mV  
Operating Error Messages   Clear text error messages displayed  
Operating Interface   Soft Touch Keypad  
ORP Electrode Calibration   Predefined ORP standards (including Zobell’s solution)  
Parameter   pH, Conductivity  
pH Buffer Sets   Color-coded: 4.01, 7.00, 10.01 pH; IUPAC: 1.679, 4.005, 7.000, 10.012, 12.45 DIN: 1.09, 4.65, 9.23 User-defined custom buffer sets  
pH Electrode Calibration   1 to 3 Calibration points Calibration summary data logged and displayed  
pH Measurement Range   0 pH to 14 pH  
pH Resolution   Selectable: 0.001/0.01/0.1 pH  
Power Supply   Rechargeable lithium-ion battery 18650 (internal) Class II, USB power adapter: 100 – 240 VAC, 50/60 Hz input; 5 VDC at 2 A USB power adapter output (external)  
Resolution   0.01 mg/L to 0.1 g/L upon measuring range  
Salinity Measurement Range   0 ppt to 42 (ppt) (‰)  
Salinity Resolution   0.01 (ppt) (‰)  
Sensor A   PHC 10101, CDC 401  
Cable Length   39.37 in (1 m)  
Dimensions of Host Machine   8.66 in x 3.74 x 2.17 in (220 mm x 95 mm x 55 mm)  
Dimensions (H x W x D)   2.48 in x 3.82 in x 8.66 in (63 mm x 97 mm x 220 mm)   
Weight of Host Machine   0.5 lb (226.8 g) (including batteries) 


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