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Conductivity Meters

Benchtop or portable instruments and probes used to measure temperature and electrical conductivity of water or solutions; used in hydroponics, aquaculture, aquaponics, and freshwater systems to monitor quantities of nutrients, salts, or impurities.
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Temperature Range (Metric) 
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Measurement Modes 
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Range (TDS) 
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Range (Conductivity)

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Display Type

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Temperature Range (Metric)

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Measurement Modes

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Range (TDS)

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IP Rating

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Range (Salinity)

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Data Points

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Range (Resistivity)

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1 – 15 of 76 results
1
Promotions Available

Thermo Scientific™ Eutech™ CON 150 Conductivity Meter

Get quick and accurate conductivity measurements in the field, laboratories, and schools.

EDGE
2
Promotions Available

Fisherbrand™ Traceable™ Conductivity Meter Pen

Easy-to-use, waterproof conductivity meter designed for routine analysis and quality control. Simply turn on, insert, and simultaneously read result and temperature.

EDGE
3
Promotions Available

accumet™ AET30 Conductivity Tester

accumet AET30 Conductivity Tester, Calibration Points: Three auto or three manual, Range: to 200.0uS/cmto 2,000uS/cmto 20.00mS/cm, 0 to 50.0 deg.C/32.0 to 122 deg.F, Accuracy: +/- 1% of full scale, +/- 0.5 deg.C+/- 0.9 deg.F + 1 LSD, Battery Life: More than 150 hours

EDGE
4
Promotions Available

Fisherbrand™ accumet™ AE6C Portable Conductimeter Kit

Sturdy and economical, the AE6C combines ease-of-use with high performance. This handy meter is IP54 rated and comes with a conductivity/TDS electrode with an automatic temperature compensation function, making it great for fieldwork.

5

Thermo Scientific™ Eutech™ CON 150 Conductivity Meter

Get quick and accurate conductivity measurements in the field, laboratories, and schools.

6
Promotions Available

Fisherbrand™ accumet™ Basic AB330 Benchtop Laboratory Conductivity Meter

Ideal for daily conductivity, TDS and salinity testing of your routine laboratory samples, the accumet™ Basic AB330 Benchtop Meter provides essential functions needed without complicated functions at a budget-friendly price.

Memory Non-volatile
Cell Constant 0.1 to 10
Measurement Modes Conductivity with Temperature,TDS with Temperature,Salinity with Temperature
Temperature (Metric) Reference 15, 20, 25 or 30°C
Temperature Coefficient 0 to 10 %/°C
TDS Factor Range 0.4 to 1
Range (Salinity) 0 to 80 ppt
Data Management Details Printed or CSV Format
Temperature Compensation Linear
Display Type 5 in. LCD
Accuracy (Salinity) ±1% Full Scale
Resolution (Salinity) 0.01, 0.1 ppt
Voltage 100/240 V
Accuracy (Conductivity) ±1% Full Scale
Data Points 500
Inputs Conductivity, ATC
Accuracy (Temperature) ±0.3°C (±0.5°F)
Calibration Points (Conductivity) 84 μS, 1413 μS, 12.88 mS, 111.8 mS
Stability Indicator Icons
Warranty 3 Years
Resolution (Conductivity) 0.01, 0.1, 1 μS; 0.01, 0.1 mS
Range (Conductivity) 0 μS to 500 mS
AC Adapter Universal Power Adapter
Resolution (TDS) 0.01, 0.1, 1 ppm; 0.01, 0.1 ppt
Calibration Conductivity, TDS, Salinity, Temperature
Calibration Points 1 to 5 (Conductivity), 1 to 5 (TDS), 1 (Salinity), 1 (Temperature)
Accuracy (TDS) ±1% Full Scale
IP Rating IP54
Data Logging Automatic with Auto-read and Timed Modes, Manual with Continuous Mode
Model AB330
Outputs Port for Computer or Printer
Frequency 50/60 Hz
Backlight Option Yes
Resolution (Temperature) 0.1°C (0.1°F)
Temperature Range (Metric) -5°C to +105°C
7
Promotions Available

Hanna Instruments™ Portable EC/TDS/Temperature Meter

Waterproof case and large, dual level LCD screen

Warranty 2 Years
Calibration Points 1
Type Portable EC/TDS/Temperature Meter
Battery Life Approximately 500 hr. of continuous use, auto-off after eight min. of non-use
Dimensions (L x W x H) 152 x 58 x 30 mm
Temperature Compensation Automatic, 0 to 60°C (32 to 140°F) with β adjustable from 0.0 to 2.4%/°C with 0.1%
Display Type LCD
Accuracy (TDS) ±2% Full-scale
Voltage 1.5 V
Accuracy (Conductivity) ±2% Full-scale
Resolution (Temperature) 0.1°C (0.1°F)
Probe Type HI 76306 EC/TDS probe with internal temperature sensor, DIN connector and 1 m (3.3’) cable (included)
Accuracy (Temperature) ±0.5°C
Weight (Metric) 205 g
8
Promotions Available

Fisherbrand™ Traceable™ Conductivity/TDS Meter Pen

Easy-to-use, waterproof conductivity/TDS meter designed for routine analysis and quality control. Simply turn on, insert, and simultaneously read result and temperature.

9

Thermo Scientific™ Orion™ Versa Star Pro™ Conductivity Benchtop Meter
BIOPHARMA

Get high accuracy, premium performance and ultimate flexibility with this conductivity benchtop meter designed for conductivity, total dissolved solids (TDS), salinity, resistivity and temperature.

Power Rating DC input: 9VDC, 1A
Salinity Measurement Modes Practical salinity (psu) or natural sea water (ppt)
Range (Resistivity) 2 ohm to 100.0 megohm
Memory Non-volatile memory preserves data log, calibration log and meter settings
Languages English, Spanish, French, Italian, German, Chinese, Portuguese and Korean
Measurement Modes Conductivity,TDS,Salinity,Resistivity with Temperature
Power Supply Universal AC adapter (included)
Data Management Details Transfer single, range or all data points to printer or computer
Display Type Color Graphic LCD with User-customizable Options
Data Points 2000 with Date and Time Stamp
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature Probe Calibration 1 point temperature offset calibration
Stability Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
Resolution (Conductivity) 0.001 μS minimum, auto ranging up to 4 significant digits
Range (Conductivity) 0.001 μS/cm to 3000 mS/cm
Log Function Type Automatic data logging with Auto-Read, Timed and Single Shot measure modes; manual data logging with
Relative Humidity Range 5 to 85%, non-condensing
Dimensions (L x W x H) 28 x 24 x 10 cm (11 x 9.5 x 3.9 in.), modules add ≤ 2 cm (0.8 in.) L & H
Accuracy (TDS) 0.5% of reading ±1 digit
Temperature Selection Manual or automatic with ATC temperature probe
Keypad Numeric with menu-specific function keys and dual purpose scroll/shortcut keys
Outputs USB (2), RS232
Backlight Option Yes
Compatible Probes 2-cell or 4-cell conductivity sensors with built-in temperature
Methods 10 per channel
Cell Constant 0.001 to 199.9 cm-1
Temperature (Metric) Reference 5, 10, 15, 20, 25°C
Channels 4 (Customizable with modules)
TDS Factor Range Linear (0.02 to 9.99)
Range (Salinity) 0.06 to 80.00 psu, 0.05 to 42.00 ppt
Temperature Compensation Linear, nLFn (non-linear ultra pure water), nLFu (non-linear ultra pure degassed water), EP (off wit
Accuracy (Salinity) 0.5% of reading ±1 digit
Resolution (Salinity) 0.01 psu or 0.01 ppt minimum, auto ranging
Accuracy (Conductivity) 0.5% of reading ±1 digit > 3 μS; 0.5% of reading ±0.01 μS ≤ 3 μS
Inputs 8 pin MiniDIN (conductivity sensor with built-in temperature), two stirrer inputs (stirrer probe)
Accuracy (Temperature) ±0.1°C
Weight (Metric) 1.2 kg, modules add 0.2 kg each
Calibration Points (Conductivity) 6
Temperature (English) Operating 41°F to 113°F (ambient)
Resolution (Resistivity) 1 ohm or 0.1 megohm, auto ranging
Accuracy (Resistivity) 0.5% of reading ±1 digit
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (Cat. No. STARA-PWR)
Resolution (TDS) 0.001 ppm minimum, auto ranging up to 4 significant digits
Calibration Conductivity with calibration editing option and temperature
Alarm Output Set point alarm, high/low limit alarm, calibration due alarm
IP Rating IP54
Weight (English) 2.5 lb., modules add 0.5 lb. each
Resolution (Temperature) 0.1°C (0.1°F)
Temperature (Metric) Operating 5°C to 45°C (ambient)
Temperature Range (Metric) -5°C to +105°C
10

Thermo Scientific™ Orion Star™ A122 Conductivity Portable Meter
BIOPHARMA

Take simple conductivity, TDS and temperature measurements with this conductivity portable meter with easy operation for basic field testing.

Memory Non-volatile memory preserves log and settings
Languages English
Cell Constant 0.001 to 10cm-1
Measurement Modes Conductivity,TDS with Temperature
Temperature (Metric) Reference 20, 25°C
Channels 1
TDS Factor Range Linear (0.02 to 9.99)
Power Supply 4 AA batteries (included) or universal AC adapter (sold separately)
Battery Life 2000 hr.
Data Management Details Internal data point memory
Temperature Compensation Linear
Display Type LCD
Accuracy (Conductivity) 0.5% of reading ±1 digit
Data Points 50
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature Probe Calibration 1 point temperature offset calibration
Inputs 8 pin MiniDIN (conductivity sensor with built-in temperature)
Accuracy (Temperature) ±0.1°C
Weight (Metric) 0.5 kg
Calibration Points (Conductivity) 1
Stability Smart Stability and Smart Averaging
Warranty 3 Year Meter
Temperature (English) Operating 41°F to 113°F (ambient)
Resolution (Conductivity) 0.01 μS minimum, auto ranging up to 3 significant digits
Range (Conductivity) 0.01 μS/cm to 200.0 mS/cm
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
Log Function Type Automatic with Auto-Read Measure Mode, Manual with Continuous Measure Mode
Range (TDS) 1 to 19,999 mg/L
Resolution (TDS) 1 mg/L
Calibration Conductivity and temperature
Battery Type 4 x AA (included)
Relative Humidity Range 5 to 85%, non-condensing
Dimensions (L x W x H) 24 x 10 x 6.5 cm (9.5 x 3.9 x 2.6 in.)
Accuracy (TDS) 0.5% of reading ±1 digit
IP Rating IP67
Temperature Selection Manual or automatic with ATC temperature probe
Keypad Simple with highlighted measure key, scroll and shortcut keys
Model Orion Star A122 Conductivity/TDS/Temperature Portable Meter
Outputs None
Weight (English) 2 lb.
Resolution (Temperature) 0.1°C (0.1°F)
Temperature (Metric) Operating 5°C to 45°C (ambient)
Temperature Range (Metric) -5°C to +105°C
Compatible Probes 2-cell or 4-cell conductivity sensors with built-in temperature
11

Thermo Scientific™ Eutech CON 450 Handheld Meter Kit

Backlit, rugged waterproof meter is ideal for any environment

12
Promotions Available

Oakton™ CON 6+ Portable Conductivity Meters, CON 6+

Autoranging conductivity with temperature measurement.

Height (Metric) 4.2 cm
Width (English) 3.37 in.
Length (Metric) 15.7 cm
Resolution (Conductivity) 0.01μS, 0.1μS, 1μS, 0.01mS, 0.1mS
Range (Conductivity) 0 to 20 μS, 0 to 200 μS, 0 to 2000 μS, 0 to 20 mS, 0 to 200 mS
Sensor Types Conductivity
Cell Constant 0.1, 1.0, 10cm-1
Measurement Modes Conductivity,TDS
Battery Type 4 x AA
Calibration Points 5
Battery Life 100 hr.
Temperature Compensation Automatic
Voltage 1.5 V
Accuracy (Conductivity) ±1% Full-scale
Resolution (Temperature) 0.1°C
Temperature Range (Metric) -10°C to +110°C
Accuracy (Temperature) ±0.5°C
Height (English) 1.68 in.
13
Promotions Available

Mettler Toledo™ FiveEasy™ Plus FP30 Conductivity Meters

Compact, benchtop meter provides high quality conductivity measurements with simple click of a button

Resolution (Conductivity) Automatic range
Memory 200 measurements, current calibration
Range (Conductivity) 0.01 μS/cm to 500 mS/cm
Range (TDS) 0 mg/L to 300 mg/L
Measurement Modes Conductivity
Calibration One point calibration with three predefined standards, manual cell constant input
Range (Salinity) 0 to 42 psu
Dimensions (L x W x H) 22.7 x 14.7 x 7 cm (9 x 5.7 x 2.7 in.)
Data Management Details RS232 or USB ports
Temperature Compensation Linear: 0.00%/°C to 10.00%/°C, reference temperature: 20° and 25°C
Display Type LCD
Voltage 100/240 V
Accuracy (Conductivity) ±0.5% of the measured value
Model FP30
Frequency 50/60Hz
Data Points 200
Temperature Range (English) 32°F to 212°F
Weight (English) 1.4 lb.
Resolution (Temperature) 0.1°C
Temperature Range (Metric) -5°C to +105°C
Inputs Mini-DIN
Accuracy (Temperature) 0.3°C
Weight (Metric) 0.63 kg
15

Thermo Scientific™ Orion Star™ A222 Conductivity Portable Meter
BIOPHARMA

Reliably measure conductivity, TDS, salinity, resistivity and temperature with this conductivity portable meter for advanced field analysis.

Salinity Measurement Modes Practical salinity (psu)
Range (Resistivity) 2 ohm to 100.0 megohm
Memory Non-volatile memory preserves data log, calibration log and meter settings
Languages English, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
Measurement Modes Conductivity,TDS,Salinity,Resistivity with Temperature
Battery Life 800 hr.
Data Management Details Transfer single, range or all data points to printer or computer
Display Type Graphic LCD with Backlight
Data Points 1000 with Date and Time Stamp
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature Probe Calibration 1 point temperature offset calibration
Stability Smart Stability and Smart Averaging
Warranty 3 Year Meter
Resolution (Conductivity) 0.001 μS minimum, auto ranging up to 4 significant digits
Range (Conductivity) 0.001 μS/cm to 3000 mS/cm
Log Function Type Automatic with Auto-Read Measure Mode, Manual with Continuous Measure Mode
Battery Type 4 x AA (included)
Relative Humidity Range 5 to 85%, non-condensing
Dimensions (L x W x H) 24 x 10 x 6.5 cm (9.5 x 3.9 x 2.6 in.)
Accuracy (TDS) 0.5% of reading ±1 digit
Temperature Selection Manual or automatic with ATC temperature probe
Keypad Comprehensive with menu-specific function keys and dual purpose scroll/shortcut keys
Outputs USB, RS232
Backlight Option Yes (Selectable)
Compatible Probes 2-cell or 4-cell conductivity sensors with built-in temperature
Methods 10 per channel with password protection
Cell Constant 0.001 to 199.9cm-1
Temperature (Metric) Reference 15, 20, 25°C
Channels 1
TDS Factor Range Linear (0.02 to 9.99)
Range (Salinity) 0.06 to 80.00 psu, 0.05 to 42.00 ppt
Temperature Compensation Linear, nLFn (non-linear ultra pure water) or off
Accuracy (Salinity) 0.5% of reading ±1 digit
Resolution (Salinity) 0.01 psu or 0.01 ppt minimum, auto ranging
Accuracy (Conductivity) 0.5% of reading ±1 digit > 3 μS; 0.5% of reading ±0.01 μS ≤ 3 μS
Inputs 8 pin MiniDIN (conductivity sensor with built-in temperature)
Accuracy (Temperature) ±0.1°C
Weight (Metric) 0.5 kg
Calibration Points (Conductivity) 5
Temperature (English) Operating 41°F to 113°F (ambient)
Resolution (Resistivity) 1 ohm or 0.1 megohm, auto ranging
Accuracy (Resistivity) 0.5% of reading ±1 digit
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
Resolution (TDS) 0.001 ppm minimum, auto ranging up to 4 significant digits
Calibration Conductivity and temperature
Alarm Output Calibration due alarm (fixed 12 hour)
IP Rating IP67
Model Orion Star A222 Conductivity/TDS/Salinity/Resistivity/Temperature Portable Meter
Weight (English) 1.2 lb.
Resolution (Temperature) 0.1°C (0.1°F)
Temperature (Metric) Operating 5°C to 45°C (ambient)
Temperature Range (Metric) -5°C to +105°C