Conductivity Tester

Budget-friendly, on-the-go pocket testers for your sample analysis

Thermo Scientific pocket testers provide budget-friendly on-the-go electrochemical testing. Choose from three models to measure conductivity, total dissolved solids (TDS), salinity and temperature.

Elite CTS pocket testers

Elite CTS pocket testers are accurate, durable and IP-67 waterproof with a large backlit graphic screen, one-touch calibration and replaceable sensor heads. Select the Elite CTS cup-sensor to read samples using a fillable tester or the Elite CTS pin-sensor to read samples using a direct-insert tester. They are ideal for testing food, beverages, hydroponics, aquaculture, environmental monitoring, cooling towers and more.

  • Flexible testing option
  • Large, backlit graphic display
  • 4 x AAA alkaline batteries
  • Average 150 hours of battery life

Expert CTS pocket testers

Expert CTS pocket testers simple to use, economical and sturdy, with a large dual-reading screen, straightforward calibration and 1-year warranty. They are ideal for testing drinking water quality, environmental monitoring, aquariums, pools, spas and more.

  • Budget-friendly option
  • Large, double line display
  • 4 x 1.5V micro alkaline batteries
  • Average 75 hours of battery life
 

Elite CTS Pocket Tester (Cup Sensor)

Elite CTS Pocket Tester (Pin Sensor)

Expert CTS Pocket Tester

Sensor Type Cup Pin Pin
Conductivity Range 0.00 to 20.00 mS/cm 0.00 to 20.00 mS/cm 0.00 to 20.00 mS/cm
Conductivity Resolution 0.1 μS: 0.0 to 200.0 μS/cm | 1 μS: 200 to 2000 μS/cm | 0.01 mS: 2.00 to 20.00 mS/cm 0.1 μS: 0.0 to 200.0 μS/cm | 1 μS: 200 to 2000 μS/cm | 0.01 mS: 2.00 to 20.00 mS/cm 10 μS: 0 to 1990 μS/cm | 0.10 mS: 2.00 to 20.00 mS
Conductivity Relative Accuracy ±1% full scale ±1% full scale ±2% full scale
Conductivity Calibration Points 1 to 3 1 to 3 1
Automatic Calibration Standards Manual or automatic (84 μS/cm, 1413 μS/cm, 12.88 mS/cm) Manual or automatic (84 μS/cm, 1413 μS/cm, 12.88 mS/cm) Manual or automatic (84 μS/cm, 1413 μS/cm, 12.88 mS/cm)
Automatic Temperature Compensation Yes, linear with adjustable temp. coefficient (0.0% to 10.0%) Yes, linear with adjustable temp. coefficient (0.0% to 10.0%) Yes, linear
Reference Temperature 25 °C 25 °C 25 °C
TDS Range 0.00 to 10.00 ppt 0.00 to 10.00 ppt 0.00 to 20.00 ppt
TDS Resolution 0.1 ppm: 0.0 to 100.0 ppm | 1 ppm: 100 to 1000 ppm | 0.01 ppt: 0.10 to 10.00 ppt 0.1 ppm: 0.0 to 100.0 ppm | 1 ppm: 100 to 1000 ppm | 0.01 ppt: 0.10 to 10.00 ppt 10 ppm: 0 to 1990 ppm | 0.10 ppt: 2.00 to 20.00 ppt
TDS Relative Accuracy ±1% of full scale ±1% of full scale ±2% of full scale
TDS Factor 0.40 to 1.00 (selectable) 0.40 to 1.00 (selectable) 0.40 to 1.00 (selectable)
Automatic Temp. Compensation Yes, linear Yes, linear Yes, linear
TDS Calibration Points 1 to 3 1 to 3 1
Salinity Range 0.00 to 10.00 ppt 0.00 to 10.00 ppt 0.0 to 10.0 ppt
Salinity Resolution 0.10 ppt 0.10 ppt 0.1 ppt
Salinity Relative Accuracy ±1 % of full scale ±1 % of full scale ±2 % of full scale
Salinity Calibration Point 1 1 1
Automatic Temp. Compensation Yes, per practical salinity curve Yes, per practical salinity curve Yes, per practical salinity curve
Temperature Range 0.0 to 60.0°C | 32.0 to 140.0°F 0.0 to 60.0°C | 32.0 to 140.0°F 0.0 to 50.0°C | 32.0 to 122.0°F
Temperature Resolution 0.1°C | 0.1°F 0.1°C, 0.1°F 0.1°C | 0.1°F
Temperature Relative Accuracy ±0.6°C, ±1.0°F: 0 to 50°C | ±1.1°C, ±1.9°F: 50.1 to 60°C ±0.6°C, ±1.0°F: 0 to 50°C | ±1.1°C, ±1.9°F: 50.1 to 60°C ±0.6°C | ±1.0°F
Temperature Calibration Yes Yes Yes
Display Type Graphic 4-digit double-line Graphic 4-digit double-line 4-digit double-line
Backlit Display Yes Yes No
Hold Function Yes Yes No
Waterproof Rating IP67 IP67 IP67
Auto Shutoff Feature Yes Yes Yes
Includes Lanyard Yes Yes No
Material ABS Plastic ABS Plastic ABS Plastic
Battery Type 4 x AAA Alkaline 4 x AAA Alkaline 4 x 1.5V Micro Alkaline
Average Battery Life 150 hours 150 hours 75 hours
Warranty One (1) year One (1) year One (1) year