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Electrochemistry Meters

Benchtop or portable instruments and electrodes used to measure various parameters of water and solutions; these include pH, temperature, resistivity, conductivity, ion-specific testing (chlorine and ISE), dissolved oxygen/BOD, ORP, and other water activity measures.
Multiparameter Meters (68)
ISE Concentration Meters (11)
Conductivity Meters (10)

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1 – 15 of 58 results
1

Thermo Scientific™ Elite pH Spear Pocket Testers and Replacement Sensors

Flexible on-the-go pH testing using durable Elite spear pocket testers with replaceable sensors for a variety of applications include food, beverage, agriculture and more!

Temperature Accuracy Manual input
Temperature Range (English) 32.0°F to 140.0°F
Resolution (pH) 0.01
Measurement Modes pH
Range (pH) -1 to 15
Temperature (Metric) Operating 5°C to 45°C (ambient)
Temperature Range (Metric) 0.0°C to 60.0°C
Accuracy (pH) ±0.02
Temperature Resolution 0.1°C, 0.1°F
2

Thermo Scientific™ Eutech™ pH 6+ Meter

Eutech™ offers a wide range of pH meters and electrodes that measure pH values in various educational, laboratory and industrial applications.

Accuracy (mV) ± 1 mV
Temperature Accuracy ±0.05°C
Resolution (pH) 0.01
Measurement Modes Acidity,Alkalinity,Conductivity,Temperature,pH
Range (pH) 0 to 14
Battery Type 4 AAA x 1.4 V
Accuracy (pH) ±0.01
Includes Auto Power-Off after 17 minutes; Hold & Self-diagnostic messages
Calibration Points Up to 5
Temperature Compensation Automatic / Manual (0 to 100 °C)
Display Type LCD
Resolution (mV) 1 mV
Temperature Range (Metric) 0°C to 100.0°C
Range (mV) -1000 to 1000 mV
Temperature Resolution 0.1 °C
3

Thermo Scientific™ Eutech™ Ion 6+ meter

Quick and easy measurement with this ion-selective meter.

Accuracy (mV) 1 mV & ±2 mV (beyond ±200 mV)
Accuracy (ISE) ± 1% full scale
Temperature (Metric) Range 0°C to 100.0°C
Calibration Points (ISE) Up to 5
Resolution (pH) 0.01
Measurement Modes Ion-Selective Meter
Range (pH) 0 to 14
Battery Type 4 AAA x 1.4V
Resolution (ISE) 0.01 ppm, 0.1 ppm, 1 ppm
Accuracy (pH) ± 0.01
Range (ISE) Ion Concentration: 0.01 to 0.99 ppm, 1.0 to 199.9 ppm, 200 to 1999 ppm
Resolution (mV) 0.1 mV and ±0.2 mV (within ±199.9 mV)
Calibration Points (pH) Up to 5 points
Resolution (Temperature) 0.1°C
Range (mV) ±500 mV
Accuracy (Temperature) ±0.5°C
4

Jenway™ Bench Meters

Use this versatile benchtop meter for a variety of applications. Jenway™ Bench Meters are ideal for routine analysis.

Height (Metric) 55 mm
Electrical Requirements 9VAC ±10% at 50/60Hz
Temperature Accuracy ±0.5°C
Length (Metric) 210 mm
Voltage 9 V
Frequency 50/60Hz
Temperature Resolution 0.1°C
5

Hanna Instruments™ Waterproof pH/Conductivity/TDS Tester

Makes measuring pH quick and easy. Hanna Instruments™ Waterproof pH/Conductivity/TDS Tester is lightweight and waterproof offering high accuracy pH, EC/TDS and temperature measurements in a single handheld unit.

6

Thermo Scientific™ Orion Star™ A326 pH/Dissolved Oxygen Portable Multiparameter Meter
BIOPHARMA

Accurately measure pH, dissolved oxygen and temperature with our pH/DO/RDO portable meter for high performance in challenging field tests.

Resolution (Polarographic DO) 0.01, 0.1mg/L
Pressure Range 400 to 850mmHg
Memory Non-volatile memory preserves data log, calibration log and meter settings
Resolution (pH) 0.1/0.01/0.001
Languages English, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
Measurement Modes pH,mV,Relative mV,ORP with Temperature,Dissolved Oxygen (% Saturation),Dissolved Oxygen (mg/L with Temperature)
Power Supply 4 AA batteries (included) or universal AC adapter (sold separately)
Barometric Pressure Correction 400 to 850mmHg, automatic using built-in barometer or manual entry
Data Management Details Transfer single, range or all data points to printer or computer
Battery Life 800 hr.
Display Type LCD Graphic, Backlit
Resolution (mV) 0.1mV
Data Points 5000 with Date and Time Stamp
Calibration Modes Water-saturated air, air-saturated water, manual (Winkler titration), zero point
Temperature Probe Calibration 1 point temperature offset calibration
Certifications/Compliance CE, TUV 3-1, FCC Class A
Salinity Factor 0.0 to 45.0 ppt, automatic correction using manual entry of sample salinity
Accuracy (mV) ±0.2 mV or ±0.05% of reading whichever is greater
Warranty 3 Year Meter
Temperature Accuracy ±0.1°C
Stability Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
Log Function Type Automatic data logging with Auto-Read and Timed measure modes; manual data logging with Continuous m
Percent Saturation Range Polarographic DO 0.0 to 600.0 % saturation
Battery Type 4 AA (included)
Relative Humidity Range 5 to 85 %, non-condensing
Range (RDO) 0.00 to 50.00mg/L
Dimensions (L x W x H) 24cm x 10cm x 6.5cm (9.5 in. x 3.9 in. x 2.6 in.)
Temperature Selection Manual or automatic with ATC temperature probe
Percent Saturation Range (RDO) 0.0 to 500.0 % saturation
Keypad Comprehensive with menu-specific function keys and dual purpose scroll/shortcut keys
Outputs USB, RS232
Temperature Range (English) 22.0°F to 221.0° F
Range (Relative mV) ±2000.0 mV
Calibration Points (pH) 1 to 5
Backlight Option Yes (Selectable)
Percent Saturation Relative Accuracy (RDO) ±2 % saturation ≤ 200 % saturation, ±10 % saturation > 200 % saturation
Range (Polarographic DO) 0.00 to 90.00mg/L
Range (mV) ±2000.0 mV
Accuracy (Barometer) ±6mmHg
Range (ORP) ±2000.0 mV
Methods 10 per channel with password protection
Pressure Resolution 1mmHg
Range (pH) -2 to 20
Channels 2
Accuracy (pH) ±0.002
Resolution (RDO) 0.01, 0.1mg/L
Percent Saturation Resolution (RDO) 0.1, 1 % saturation
Percent Saturation Relative Accuracy (Polarographic DO) ±2 % saturation or ±2% of reading whichever is greater
Inputs BNC (pH or ORP electrode), pin-tip (reference electrode), 8 pin MiniDIN (ATC temperature probe), 9 pin MiniDIN (RDO optical or polarographic DO sensor with built-in temperature)
Weight (Metric) 0.5 kg
Temperature (English) Operating 41°F to 113°F (ambient)
Isopotential Point 7.000pH
Accuracy (Polarographic DO) ±0.2mg/L or ±2% of reading, whichever is greater
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
Calibration pH with calibration editing option, relative mV (RmV), ORP, dissolved oxygen and temperature
Calibration Points 1 point relative mV (RmV) mode, 1 point ORP mode
Alarm Output High/low limit alarm, calibration due alarm
IP Rating IP67
Percent Saturation Resolution (Polarographic DO) 0.1, 1 % saturation
Model Orion Star A326 pH/mV/RmV/ORP/RDO Optical/Dissolved Oxygen/Temperature Portable Meter
Weight (English) 1.2 lb.
Temperature (Metric) Operating 5°C to 45°C (ambient)
Temperature Range (Metric) -5.0°C to +105.0°C
Percent Saturation Range (Polarographic DO) 0.0 to 600.0 % saturation
Temperature Resolution 0.1°C, 0.1°F
Accuracy (RDO) ±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L
7

Thermo Scientific™ Orion Star™ A325 pH/Conductivity Portable Multiparameter Meter
BIOPHARMA

Accurately measure pH, conductivity and temperature with our pH/conductivity portable meter for high performance in challenging field tests.

Salinity Measurement Modes Practical salinity (psu) or natural sea water (ppt)
Range (Resistivity) 2 ohm to 100.0 meg-ohm
Memory Non-volatile memory preserves data log, calibration log and meter settings
Resolution (pH) 0.1/0.01/0.001
Languages English, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
Measurement Modes pH,mV,Relative mV,TDS,ORP with Temperature,Salinity,Conductivity,Resistivity with Temperature
Power Supply 4 AA batteries (included) or universal AC adapter (sold separately)
Data Management Details Transfer single, range or all data points to printer or computer
Battery Life 800 hr.
Display Type LCD Graphic, Backlit
Resolution (mV) 0.1mV
Data Points 5000 with Date and Time Stamp
Temperature Probe Calibration 1 point temperature offset calibration
Certifications/Compliance CE, TUV 3-1, FCC Class A
Accuracy (mV) ±0.2 mV or ±0.05% of reading whichever is greater
Warranty 3 Year Meter
Temperature Accuracy ±0.1°C
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 AA (included)
Relative Humidity Range 5 to 85 %, non-condensing
Dimensions (L x W x H) 24cm x 10cm x 6.5cm (9.5 in. x 3.9 in. 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
Temperature Range (English) 22.0°F to 221.0° F
Range (Relative mV) ±2000.0 mV
Calibration Points (pH) 1 to 5
Backlight Option Yes (Selectable)
Range (mV) ±2000.0 mV
Range (ORP) ±2000.0 mV
Methods 10 per channel with password protection
Cell Constant 0.001 to 199.9cm-1
Temperature (Metric) Reference 5, 10, 15, 20, 25°C
Range (pH) -2 to 20
TDS Factor Range Linear (0.02 to 9.99)
Channels 2
Accuracy (pH) ±0.002
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 with warning) 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 BNC (pH or ORP electrode), pin-tip (reference electrode), 8 pin MiniDIN (conductivity sensor with built-in temperature or ATC temperature probe)
Weight (Metric) 0.5 kg
Calibration Points (Conductivity) Up to 5
Temperature (English) Operating 41°F to 113°F (ambient)
Resolution (Resistivity) 1 ohm or 0.1 meg-ohm, auto ranging
Isopotential Point 7.000pH
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 ppm to 200.0 ppt
Resolution (TDS) 0.001 ppm minimum, auto ranging up to 4 significant digits
Calibration pH with calibration editing option, relative mV (RmV), ORP, conductivity with calibration editing op
Calibration Points 1 point relative mV (RmV) mode, 1 point ORP mode
Alarm Output High/low limit alarm, calibration due alarm
IP Rating IP67
Model Orion Star A325 pH/mV/RmV/ORP/Conductivity/TDS/Salinity/Resistivity/Temperature Portable Meter
Weight (English) 1.2 lb.
Temperature (Metric) Operating 5°C to 45°C (ambient)
Temperature Range (Metric) -5.0°C to +105.0°C
Temperature Resolution 0.1°C, 0.1°F
8

Oakton™ Testr PCTS 50 Waterproof Pocket pH/Cond/TDS/Salinity Tester

Great for water, wastewater, laboratory or plant use, these multiparameter testers feature long-life pH electrodes with a wide range of sample compatibility. Ideal for pH, conductivity, TDS, salinity, and temperature testing.

9

Mettler Toledo™ FiveEasy™ F30 Conductivity Meters

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

Resolution (Conductivity) Automatic range
Memory Current calibration
Range (Conductivity) 0.01 μS/cm to 200 mS/cm
Range (TDS) 0 mg/L to 300 mg/L
Measurement Modes Conductivity
Calibration One point calibration with three predefined standards
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.)
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 F30
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) 0.5°C
Weight (Metric) 0.63 kg
10

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
11

Hanna Instruments™ HI-122-02 Benchtop pH/ORP/Temperature Meter with Printer

This meter offers accurate pH measurement with the added feature of a built-in printer. With millesimal resolution and automatic temperature compensation, HI-122-02 is provided with the Calibration Check™ system that evaluates electrode condition and function in relation to the calibration.

12

METTLER TOLEDO™ Portable pH/Conductivity/Dissolved Oxygen/Ion Meters

Water and dust proof, IP67 rated meter for portable or field measurements. Portable meters compatible with pH, conductivity, dissolved oxygen, and ion selective electrodes.

IP Rating IP67
Certifications/Compliance ISO 9001:2000
13
Promotions Available

Thermo Scientific™ Elite PCTS pH / Conductivity / TDS / Salinity Pocket Testers and Replacement Sensors

Flexible on-the-go pH, conductivity, TDS, salinity and temperature testing using durable Elite PCTS pocket testers for a variety of applications including agriculture, aquaculture, hydroponics and more!

Salinity Measurement Modes Per practical salinity curve
Temperature Accuracy ±0.6°C, ±1.0°F for 0.0 to 50.0°C; ±1.1°C, ±1.9°F for 50.1 to 60.0°C
Resolution (Conductivity) 0.1 μS/cm for 0.0 to 200.0 μS/cm; 1 μS/cm for200 to 2000 μS/cm; 0.01 mS/cm for 2.00 to 20.00 mS/cm
Range (Conductivity) 0.00 to 20.00 mS/cm
Resolution (pH) 0.01
Range (TDS) 0.00 to 10.00 ppt
Measurement Modes pH,Conductivity,TDS,Salinity,Temperature
Resolution (TDS) 0.1 ppm for 0.0 to 100.0 ppm; 1 ppm for 100 to 1000 ppm; 0.01 ppt for 0.10 to 10.00 ppt
Range (pH) -1.00 to 15.00
TDS Factor Range 0.40 to 1.00 (selectable)
Accuracy (pH) ±0.02
Relative Humidity Range 5 to 85 %, non-condensing
Range (Salinity) 0.00 to 10.00 ppt
Temperature Compensation Yes
Accuracy (TDS) ± 1% full scale
Accuracy (Salinity) ± 1% full scale
Resolution (Salinity) 0.10 ppt
Accuracy (Conductivity) ± 1% full scale
Temperature Range (English) 32.0°F to 140.0°F
Calibration Points (pH) 1 to 3
Calibration Modes pH, conductivity, TDS, salinity, temperature
Temperature Probe Calibration 1 point
Temperature (Metric) Operating 5°C to 45°C (ambient)
Temperature Resolution 0.1°C, 0.1°F
Calibration Points (Conductivity) 1 to 3
14

WTW™ ProfiLine™ pH/ION 3310 Pocket Meter
GREENER_CHOICE

The WTW™ ProfiLine™ pH/ION 3310 is a precise, portable pH/mV/ISE pocket meter with lit background graphic display and manual memory for safe and convenient measurements.

15

Thermo Scientific™ Orion™ Pro Star PD216 pH/ion and DO Bench Meter

Designed to provide accurate and reliable pH, ORP, ion concentration, dissolved oxygen, barometric pressure and temperature analysis, the Thermo Scientific™ Orion™ Pro Star PD216 bench meter is well suited for laboratories that desire a modern meter with advance performance.

Resolution (Polarographic DO) 0.1, 1% saturation; 0.01, 0.1 mg/L or ppm
Pressure Range 400.0 to 850.0 mmHg; 0.533 to 1.133 bar
Memory Non-volatile
Advanced ISE Functions Single known addition, single known subtraction, double known addition, double known subtraction, analyte addition and analyte subtraction
Resolution (pH) 0.1, 0.01 or 0.001 pH
Languages Chinese, English, French, German, Italian, Japanese, Korean, Portuguese, Spanish
Measurement Modes pH,ORP,mV,Ion Concentration (ISE),Dissolved Oxygen (mg/L),Dissolved Oxygen (% Saturation),Temperature,Barometric Pressure
Resolution (ISE) 0.0001 minimum, 1 to 5 digits
Barometric Pressure Correction Yes, automatic with built-in barometer or manual
Display Type 7-in. High-resolution Color Graphic LCD
Resolution (mV) 0.1 mV
Resolution (Ion) 0.0001 minimum, 1 to 5 digits
Data Points 10,000 with Date and Time Stamp
Calibration Modes Water-saturated air (100% and 0% saturation), air-saturated water (100% and 0% saturation) or custom concentration value (Winkler)
Temperature Probe Calibration 1 or 2 point temperature offset calibration
Certifications/Compliance CE, TUV 3-1, FCC Class A
Probe Type Polarographic or optical DO electrode
Salinity Factor 0.0 to 50.0 ppt
Accuracy (mV) ±0.2 mV or ±0.05% of the reading, whichever is greater
Accuracy (ISE) ±0.2 mV or ±0.05% of the reading, whichever is greater
Warranty 2 year meter warranty
Temperature Accuracy ±0.3°C, ±0.5°F
Calibration Points (ISE) Up to 5
Log Function Type Automatic with Auto-Read and Timed Read Modes, Manual with Continuous Read Mode
Percent Saturation Range Polarographic DO 0.0 to 600.0% saturation
Range (RDO) 0.0 to 600.0% saturation; 0.01 to 90.0 mg/L or ppm
Dimensions (L x W x H) 218.9 x 153.2 x 91.33 mm; 8.62 x 6.03 x 3.60 in.
Temperature Selection Automatic with ATC temperature sensor, ambient or manual
Percent Saturation Range (RDO) 0.0 to 600.0% saturation
Keypad Capacitive touchscreen user interface
Outputs USB flash drive, computer or printer (STARA-106)
Temperature Range (English) -22.0°F to +266.0°F
Range (Relative mV) -2000 to 2000 mV
Calibration Points (pH) 1 to 5 points
Backlight Option Yes
Percent Saturation Relative Accuracy (RDO) ±2% saturation
Range (Polarographic DO) 0.0 to 600.0% saturation; 0.01 to 90.0 mg/L or ppm
Range (mV) -2000 to 2000 mV
Accuracy (Barometer) ±6.0 mmHg; ±0.008 bar
Range (ORP) -2000 to 2000 mV
Methods 10 per channel (20 total)
Range (pH) -2 to 20
Channels 2
Accuracy (pH) ±0.002 pH
Range (ISE) 0.0001 to 19999
Resolution (RDO) 0.1, 1% saturation; 0.01, 0.1 mg/L or ppm
Percent Saturation Resolution (RDO) 0.1, 1% saturation
Resolution (DO) 0.1, 1% saturation; 0.01, 0.1 mg/L or ppm
Percent Saturation Relative Accuracy (Polarographic DO) ±2% saturation
Inputs Channel 1: BNC for pH, ORP or ISE, 8-pin MiniDIN for ATC, pin-tip for reference; Channel 2: 9-pin MiniDIN for dissolved oxygen with ATC
Weight (Metric) 1.00 kg
Resolution (ORP) 0.1 mV
Accuracy (DO) ±2% saturation; ±0.02 mg/L or ppm
Isopotential Point 7.000 pH; 1.000 ion concentration
Accuracy (Polarographic DO) ±2% saturation; ±0.02 mg/L or ppm
AC Adapter Universal 100-240 V 50/60 Hz power supply with wall plugs for US/Japan, Euro, UK/Singapore, Australia/New Zealand and China outlets
Calibration pH, ORP, Ion Concentration, DO, Barometric Pressure, Temperature
Accuracy (ORP) ±0.2 mV or ±0.05% of the reading, whichever is greater
Calibration Points 1 to 5 (pH), 1 (ORP), 1 to 5 (ion), 1 to 2 (DO), 1 (barometer), 1 to 2 (temperature)
Alarm Output Calibration reminder alarm, high and low limit alarm per parameter
IP Rating IP54
Percent Saturation Resolution (Polarographic DO) 0.1, 1% saturation
Weight (English) 2.20 lbs.
Range (Ion) 0.0001 to 19999
Temperature Range (Metric) -30.0°C to +130.0°C
Range (DO) 0.0 to 600.0% saturation; 0.01 to 90.0 mg/L or ppm
Temperature Resolution 0.1°C, 0.1°F
Accuracy (RDO) ±2% saturation; ±0.02 mg/L or ppm