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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Fisherbrand™ accumet™ Basic AB330 Conductivity/TDS/Salinity Benchtop Laboratory Meter

Ideal for daily conductivity, TDS and salinity testing of your routine laboratory samples. The accumet basic AB330 benchtop meters provide the essential functions needed for common conductivity, TDS and salinity measurements, without complicated functions, at a budget-friendly price.

Pricing and Availability
Specifications

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	0.40 to 1.00
Range (Salinity)	0.00 to 80.0 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
Certifications/Compliance	CE, TUV 3-1, FCC Class A
Inputs	Conductivity/ATC
Accuracy (Temperature)	±0.3°C, ±0.5°F
Calibration Points (Conductivity)	Automatic recognition of 84 µS, 1413 µS, 12.88 mS, 111.8 mS
Temperature Accuracy	±0.3°C, ±0.5°F
Stability	Indicator icons
Warranty	3 years
Resolution (Conductivity)	0.01, 0.1, 1 µS; 0.01, 0.1 mS
Range (Conductivity)	0.00 µS to 500.0 mS
AC Adapter	Included, 100/240 V universal power adapter
Range (TDS)	0.00 ppm to 500.0 ppt (for TDS factor of 1.00)
Resolution (TDS)	0.01, 0.1, 1 ppm; 0.01, 0.1 ppt
Calibration	Conductivity, TDS, salinity, temperature
Calibration Points	1 to 5 point conductivity, 1 to 5 point TDS, 1 point salinity, 1 point temperature
Alarm Output	Calibration due alarm, selectable 1 to 60 hours or off
Accuracy (TDS)	±1% full scale
IP Rating	IP-54
Data Logging	Automatic with Auto-Read and Timed modes, manual with Continuous mode
Model	AB330
Outputs	Communication 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

Fisherbrand™ Traceable™ Bench Conductivity Meter

Measures conductivity, resistivity, dissolved solids, salinity, concentration, and temperature; includes certificate of traceability to standards provided by NIST™.

Pricing and Availability

Fisherbrand™ Traceable™ Dual-Display Conductivity Meter

Measures conductivity and temperature; includes NIST™ traceability certificate.

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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.

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Fisherbrand™ Traceable™ Salinity Meter Pen

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

Pricing and Availability

Fisherbrand™ Traceable™ Expanded Range Conductivity Meter

Ideal for checking the purity of water from stills, deionizers, and reverse osmosis, testing laboratory glassware rinsing, measuring total dissolved solids, and making solutions.

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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.

Pricing and Availability

Science First™ Liquid Conductivity Indicator

Determine the conductivity of different liquids or concentrations.

Pricing and Availability
Specifications

For Use With (Application)	Determine the conductivity of liquids or concentrations

Lab-Aids™ Audible Conductivity Indicator

Auditory Conductivity Indicators are a practical alternative to light sensitive LED conductivity indicators. They also provide semi-quantitative information about the materials being tested.

Pricing and Availability

Fisherbrand™ Traceable™ Salinity Meter Pen

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

Pricing and Availability

Thermo Scientific™ Orion Star™ A122 Conductivity Portable Meter

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

Pricing and Availability
Specifications

Memory	Non-volatile memory preserves log and settings
Languages	English
Cell Constant	0.001 to 10cm-1
Measurement Modes	Conductivity or 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 data logging with Auto-Read measure mode; manual data logging 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

Thermo Scientific™ Orion Star™ A322 Conductivity Portable Meter

Accurately monitor conductivity, TDS, salinity, resistivity and temperature with this conductivity portable meter designed for challenging field tests.

Pricing and Availability
Specifications

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 and Chinese; Portuguese and Korean available with software update
Measurement Modes	Conductivity, TDS, salinity or resistivity with temperature
Power Supply	4 AA batteries (included) or universal AC adapter (sold separately)
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	5000 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 and Timed measure modes; manual data logging with Continuous m
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	5, 10, 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), 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
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
Range (TDS)	0.001 to 200.0 ppm
Resolution (TDS)	0.001 ppm minimum, auto ranging up to 4 significant digits
Calibration	Conductivity with calibration editing option and temperature
Alarm Output	High/low limit alarm, calibration due alarm
IP Rating	IP67
Model	Orion Star A322 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

Thermo Scientific™ Orion Lab Star EC112 Conductivity Bench Meters

Orion Lab Star EC112 conductivity bench meters measure conductivity, salinity or TDS with temperature, feature a large backlit display for easy viewability, and offer small footprint to save bench space. This conductivity meter is ideal for simplified, budget-friendly lab testing and data recording.

Pricing and Availability
Specifications

Salinity Measurement Modes	Natural Seawater (ppt) or Practical Salinity (PSU)
Memory	Non-volatile
Cell Constant	0.100 to 10.00 cm-1
Measurement Modes	Conductivity with temperature; salinity with temperature; TDS with temperature
Temperature (Metric) Reference	15.0, 20.0, 25.0 or 30.0°C
Temperature Coefficient	0 to 10 %/°C
TDS Factor Range	0.40 to 1.00
Range (Salinity)	0.00 to 80.0 ppt; 0.00 to 42.0 PSU
Data Management Details	Continuous, Auto-Read and Timed read modes
Temperature Compensation	Linear (0 to 10 %/°C) or off
Display Type	5 in. backlit LCD
Accuracy (Salinity)	±0.5 % of the reading ± 1 LSD
Resolution (Salinity)	0.01, 0.1 ppt; 0.01, 0.1 PSU
Accuracy (Conductivity)	±0.5 % of the reading ± 1 LSD
Data Points	500 data sets with time and date
Certifications/Compliance	CE, TUV 3-1, FCC Class A
Temperature Probe Calibration	1 point temperature offset calibration
Inputs	8-pin MiniDIN for conductivity with built-in ATC
Accuracy (Temperature)	±0.3°C, ±0.5°F
Weight (Metric)	700 grams
Calibration Points (Conductivity)	1-5 points conductivity
Warranty	3 year meter warranty
Resolution (Conductivity)	0.01, 0.1, 1 µS; 0.01, 0.1 mS
Range (Conductivity)	0.00 µS to 500.0 mS
AC Adapter	Universal 100-240 V 50/60 Hz power supply with twist-and-lock meter connection and interchangeable wall plugs for US/Japan, Euro, UK/Singapore, Australia/New Zealand and China outlets
Log Function Type	Automatic with Auto-Read and Timed read modes, manual with Continuous read mode
Range (TDS)	0.00 ppm to 500.0 ppt (1.00 factor)
Resolution (TDS)	0.01, 0.1, 1 ppm; 0.01, 0.1 ppt
Calibration	Conductivity, salinity, TDS and temperature
Calibration Points	1 point salinity, 1-5 points TDS, 1 point temperature
Alarm Output	Calibration reminder alarm
Dimensions (L x W x H)	187.2 x 155.2 x 61.7 mm, 7.37 x 6.11 x 2.43 in.
Accuracy (TDS)	±0.5 % of the reading ± 1 LSD
IP Rating	IP54
Temperature Selection	Manual or automatic with ATC temperature probe
Outputs	Computer or printer (STARA-106)
Backlight Option	Yes
Temperature Range (English)	23.0°F to 221.0°F
Weight (English)	1.54 lb.
Resolution (Temperature)	0.1°C, 0.1°F
Temperature Range (Metric)	-5.0°C to +105.0°C
Compatible Probes	2-cell and 4-cell conductivity electrodes

Thermo Scientific™ Orion Star™ A222 Conductivity Portable Meter

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

Pricing and Availability
Specifications

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 or 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 data logging with Auto-Read measure mode; manual data logging 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
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)
Range (TDS)	0.001 to 200.0 ppm
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

Thermo Scientific™ Orion Star™ A212 Conductivity Benchtop Meter

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

Pricing and Availability
Specifications

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 and Chinese; Portuguese and Korean available with software update
Measurement Modes	Conductivity, TDS, salinity or resistivity with temperature
Power Supply	Universal AC adapter (included) or 4 AA batteries (sold separately)
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	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
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 data logging with Auto-Read and Timed measure modes; manual data logging with Continuous m
Battery Type	4 x AA (sold separately)
Relative Humidity Range	5 to 85%, non-condensing
Dimensions (L x W x H)	24 x 18 x 11 cm (9.5 x 7.1 x 4.3 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	5, 10, 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), 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
Inputs	8 pin MiniDIN (conductivity sensor with built-in temperature), stirrer input (stirrer probe)
Accuracy (Temperature)	±0.1°C
Weight (Metric)	0.9 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 (Cat. No. 1010003)
Range (TDS)	0.001 to 200.0 ppm
Resolution (TDS)	0.001 ppm minimum, auto ranging up to 4 significant digits
Calibration	Conductivity with calibration editing option and temperature
Alarm Output	High/low limit alarm, calibration due alarm
IP Rating	IP54
Model	Orion Star A212 Conductivity/TDS/Salinity/Resistivity/Temperature Benchtop Meter
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

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