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 TypeCupPinPin
Conductivity Range0.00 to 20.00 mS/cm0.00 to 20.00 mS/cm0.00 to 20.00 mS/cm
Conductivity Resolution0.1 μS: 0.0 to 200.0 μS/cm | 1 μS: 200 to 2000 μS/cm | 0.01 mS: 2.00 to 20.00 mS/cm0.1 μS: 0.0 to 200.0 μS/cm | 1 μS: 200 to 2000 μS/cm | 0.01 mS: 2.00 to 20.00 mS/cm10 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 Points1 to 31 to 31
Automatic Calibration StandardsManual 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 CompensationYes, linear with adjustable temp. coefficient (0.0% to 10.0%)Yes, linear with adjustable temp. coefficient (0.0% to 10.0%)Yes, linear
Reference Temperature25 °C25 °C25 °C
TDS Range0.00 to 10.00 ppt0.00 to 10.00 ppt0.00 to 20.00 ppt
TDS Resolution0.1 ppm: 0.0 to 100.0 ppm | 1 ppm: 100 to 1000 ppm | 0.01 ppt: 0.10 to 10.00 ppt0.1 ppm: 0.0 to 100.0 ppm | 1 ppm: 100 to 1000 ppm | 0.01 ppt: 0.10 to 10.00 ppt10 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 Factor0.40 to 1.00 (selectable)0.40 to 1.00 (selectable)0.40 to 1.00 (selectable)
Automatic Temp. CompensationYes, linearYes, linearYes, linear
TDS Calibration Points1 to 31 to 31
Salinity Range0.00 to 10.00 ppt0.00 to 10.00 ppt0.0 to 10.0 ppt
Salinity Resolution0.10 ppt0.10 ppt0.1 ppt
Salinity Relative Accuracy±1 % of full scale±1 % of full scale±2 % of full scale
Salinity Calibration Point111
Automatic Temp. CompensationYes, per practical salinity curveYes, per practical salinity curveYes, per practical salinity curve
Temperature Range0.0 to 60.0°C | 32.0 to 140.0°F0.0 to 60.0°C | 32.0 to 140.0°F0.0 to 50.0°C | 32.0 to 122.0°F
Temperature Resolution0.1°C | 0.1°F0.1°C, 0.1°F0.1°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 CalibrationYesYesYes
Display TypeGraphic 4-digit double-lineGraphic 4-digit double-line4-digit double-line
Backlit DisplayYesYesNo
Hold FunctionYesYesNo
Waterproof RatingIP67IP67IP67
Auto Shutoff FeatureYesYesYes
Includes LanyardYesYesNo
MaterialABS PlasticABS PlasticABS Plastic
Battery Type4 x AAA Alkaline4 x AAA Alkaline4 x 1.5V Micro Alkaline
Average Battery Life 150 hours150 hours75 hours
WarrantyOne (1) yearOne (1) yearOne (1) year