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.

1 – 15 of 73 results

Fisherbrand™ Traceable™ Portable Dissolved Oxygen Meter

Traceable™ Portable Dissolved Oxygen Meter is traceable to NIST™ standards.

Pricing & Availability

Promotions Available

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.

Pricing & Availability
Specifications

IP Rating	IP67
Certifications/Compliance	ISO 9001:2000

Thermo Scientific™ Orion Star™ A323 Dissolved Oxygen Portable Meter

Accurately monitor dissolved oxygen (optical/polarographic) and temperature with this RDO/DO portable meter for challenging field testing.

Pricing & Availability
Specifications

Temperature (Metric) Range	0.0°C to 50.0°C
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
Languages	English, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
Measurement Modes	Dissolved Oxygen (% Saturation),Dissolved Oxygen (mg/L with Temperature and Barometric Pressure)
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
Battery Life	800 hours
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
Calibration Modes	Water-saturated air, air-saturated water, manual (Winkler titration), zero point
Certifications/Compliance	CE, TUV 3-1, FCC Class A
Temperature Probe Calibration	1 point temperature offset calibration
Salinity Factor	0.0 to 45.0 ppt, automatic correction using manual entry of sample salinity
Stability	Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
Warranty	3 Year Meter Warranty
Sensor Types	RDO optical dissolved oxygen sensor or polarographic dissolved oxygen sensor
Percent Saturation Range Polarographic DO	0.0 to 600.0 % saturation
Log Function Type	Automatic data logging with Auto-Read and Timed measure modes; manual data logging with Continuous m
Battery Type	Four AA (included)
Relative Humidity Range	5 to 85 %, non-condensing
Range (RDO)	0.00 to 50.00 mg/L
Dimensions (L x W x H)	24 cm x 10 cm x 6.5 cm (9.5 in. x 3.9 in. x 2.6 in.)
Percent Saturation Range (RDO)	0.0 to 500.0 % saturation
Temperature Selection	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)
Percent Saturation Relative Accuracy (RDO)	±2 % saturation ≤ 200 % saturation, ±10 % saturation > 200 % saturation
Range (Polarographic DO)	0.00 to 90.00 mg/L
Accuracy (Barometer)	±6mmHg
Methods	10 per channel with password protection
Pressure Resolution	1mmHg
Channels	1
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	9 pin MiniDIN (RDO optical or polarographic DO sensor with built-in temperature)
Accuracy (Temperature)	±0.1°C
Weight (Metric)	0.5 kg
Temperature (English) Operating	41°F to 113°F (ambient)
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)
Alarm Output	High/low limit alarm, calibration due alarm
IP Rating	IP-67
Percent Saturation Resolution (Polarographic DO)	0.1, 1 % saturation
Model	Orion Star A323 RDO Optical/Dissolved Oxygen/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)
Percent Saturation Range (Polarographic DO)	0.0 to 600.0 % saturation
Accuracy (RDO)	±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L

Promotions Available

METTLER TOLEDO™ S900 SevenExcellence™ Dissolved Oxygen/BOD Benchtop Meter

The S900 is a dissolved oxygen(DO)/biological oxygen demand (BOD) meter. It can be expanded with additional modules to measure pH, conductivity, ISE, salinity, TDS, and Redox/ORP. It has an intuitive touchscreen, measurement shortcuts, and can export data to a printer, Excel file, or LIMS system.

Pricing & Availability
Specifications

Accuracy	±1
Display Type	Color TFT
Accuracy (Concentration)	±0.1mg/L from 0 to 8; ±0.2mg/L from 8 to 20; ±10% from 20 to 50
Percent Saturation Range Polarographic DO	0 to 500%
Measurement Modes	Dissolved Oxygen
Temperature Range (Metric)	0°C to 50°C
Range (DO)	0.000 to 50mg/L (ppm)
Channels	3
Resolution	0.001 (display)

Thermo Scientific™ Orion Lab Star DO Dissolved Oxygen Bench Meters

Orion Lab Star DO113 dissolved oxygen bench meters measure DO as % saturation or concentration with temperature, feature large backlit display for easy viewability, and offer small footprint to save bench space. This DO meter is ideal for simplified, budget-friendly lab testing and data recording.

Pricing & Availability
Specifications

Temperature (Metric) Range	-5.0°C to +105.0°C
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
Measurement Modes	Dissolved Oxygen (% Saturation with Temperature),Dissolved Oxygen (mg/L with Temperature),Dissolved Oxygen (ppm with Temperature)
Data Management Details	Continuous, Auto-Read and Timed read modes
Display Type	5 in. backlit LCD
Data Points	500 Sets with Date and Time Stamp
Calibration Modes	100 % saturation, 0 % saturation, custom concentration value
Certifications/Compliance	CE, TUV 3-1, FCC Class A
Temperature Probe Calibration	1 point temperature offset calibration
Accuracy (Temperature)	±0.3°C, ±0.5°F
Weight (Metric)	700 grams
Warranty	3 year meter warranty
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
Sensor Types	Polarographic
Percent Saturation Range Polarographic DO	0.0 to 300.0 % saturation
Log Function Type	Automatic with Auto-Read and Timed Read Modes, Manual with Continuous Read Mode
Relative Humidity Range	5 to 85%, non-condensing
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.
IP Rating	IP54
Temperature Selection	Manual or automatic with ATC temperature probe
Outputs	Computer or printer (STARA-106)
Backlight Option	Yes
Weight (English)	1.54 lb.
Resolution (Temperature)	0.1°C, 0.1°F
Range (Polarographic DO)	0.0 to 300.0 % saturation; 0.00 to 30.0 mg/L or ppm

Ohaus™ Starter ST20D Dissolved Oxygen Pen Meter

Compact design for fast, convenient electrochemistry readings. Measure dissolved oxygen to 0.1 mg/L ranging from 0.0 to 19.9 mg/L. IP67, automatic temperature compensation, 1 point calibration and auto-off after 10 minutes of non-use.

Pricing & Availability

Fisherbrand™ accumet™ XL600 Benchtop Dual pH/ISE, Conductivity and Dissolved Oxygen Meters

Provide advanced measurements with simple operation and offer a large, vivid color touch-screen display. Fisherbrand accumet XL600 pH/ISE/conductivity/DO benchtop meters offer advanced features with simple operation to help ensure your measurements are reliable and your laboratory processes are efficient.

Pricing & Availability
Specifications

Range (Resistivity)	3 W to 100 MW over 4 ranges: 0 to 20 kW, 20 to 200 kW, 200 kW to 2 MW, 2 to 100 MW
Resolution (pH)	0.1/0.01/0.001
Width (Metric)	17.3 cm
Resolution (ISE)	2/3/4 Digits
Data Management Details	3 to 86400 sec.
Display Type	LCD
Resolution (mV)	0.1mV
Data Points	2000
Certifications/Compliance	NIST, ISO, FDA, USDA, EPA
Height (English)	3.89 in.
Accuracy (mV)	±0.2 mV
Accuracy (ISE)	0.5% full scale (monovalent ion), 1% full scale (divalent ion)
Warranty	3 Years
Temperature Accuracy	±0.2°C (±0.3°F)
Calibration Points (ISE)	2 to 6
Resolution (Conductivity)	0.001/0.01/0.1mS
Range (Conductivity)	0 to 500 mS
Dimensions (L x W x H)	24.6 x 17.3 x 9.9cm (9.7 x 6.8 x 3.9 in.)
Accuracy (TDS)	± 1% full scale
Outputs	RS232, USB-A, Mini-B USB, RJ45, stirrer port (2)
Calibration Points (pH)	Up to 6 preset or 5 custom
Range (mV)	±2000 mV
Resolution	Multiple
Length (Metric)	24.6 cm
Detection Range	Multiple
Length (English)	9.68 in.
Cell Constant	0.01 to 10
Range (pH)	-2 to 20
Accuracy (pH)	±0.002
Range (ISE)	±2000 mV
Range (Salinity)	0 to 80 ppt
Accuracy	Multiple
Accuracy (Salinity)	± 1% full scale
Resolution (Salinity)	0.01/0.1ppm, 0.001/0.01/0.1ppt
Voltage	100/240 V
Accuracy (Conductivity)	±1% FS
Resolution (DO)	0.01mg/L (0.1mbar), 0.1% saturation
Inputs	2 BNC, 2 ATC
Weight (Metric)	1.13 kg
Calibration Points (Conductivity)	Automatic (4 points), maximum 1/range, manual (5 points), maximum 1/range
Height (Metric)	9.9 cm
Accuracy (DO)	0.1 +1 LSD
Resolution (Resistivity)	0.01/0.1W, 0.001/0.1kW, 0.01MW
Accuracy (Resistivity)	± 1% full scale
Range (TDS)	0.050 ppm to 500 ppt (at TDS factor 1.00)
Resolution (TDS)	0.01/0.1ppm, 0.001/0.01/0.1ppt
Frequency	50/60Hz
Weight (English)	2.5 lb.
Range (DO)	0 to 20mg/L (0 to 1272mbar), 0 to 200% saturation with 13-620-SSP electrode
Temperature Resolution	0.1°C

Thermo Scientific™ Orion Star™ A123 Dissolved Oxygen Portable Meter

Take simple dissolved oxygen and temperature measurements with this portable meter with easy operation for basic field testing.

Pricing & Availability
Specifications

Temperature (Metric) Range	0.0°C to 50.0°C
Resolution (Polarographic DO)	0.01, 0.1mg/L
Pressure Range	450 to 850mmHg (manual entry)
Memory	Non-volatile memory preserves log and settings
Languages	English
Measurement Modes	Dissolved Oxygen (% Saturation),Dissolved Oxygen (mg/L with Temperature)
Channels	1
Power Supply	4 AA batteries (included) or universal AC adapter (sold separately)
Barometric Pressure Correction	450 to 850mmHg, automatic with manual entry
Battery Life	2000 hours
Data Management Details	Internal data point memory
Display Type	LCD
Data Points	50
Calibration Modes	Water-saturated air, manual (Winkler titration)
Percent Saturation Relative Accuracy (Polarographic DO)	±2 % saturation or ±2% of reading whichever is greater
Certifications/Compliance	CE, TUV 3-1, FCC Class A
Temperature Probe Calibration	1 point temperature offset calibration
Inputs	9 pin MiniDIN (polarographic DO sensor with built-in temperature)
Accuracy (Temperature)	±0.1°C
Weight (Metric)	0.5 kg
Salinity Factor	0 to 45 ppt, automatic correction using manual entry of sample salinity
Stability	Smart Stability and Smart Averaging
Warranty	3 Year Meter Warranty
Temperature (English) Operating	41°F to 113°F (ambient)
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)
Sensor Types	Polarographic Dissolved Oxygen Sensor
Percent Saturation Range Polarographic DO	0.0 to 200.0 % saturation
Log Function Type	Automatic with Auto-Read Measure Mode, Manual with Continuous Measure Mode
Battery Type	Four AA (included)
Relative Humidity Range	5 to 85 %, non-condensing
Dimensions (L x W x H)	24 cm x 10 cm x 6.5 cm (9.5 in. x 3.9 in. x 2.6 in.)
IP Rating	IP-67
Temperature Selection	Automatic with ATC temperature probe
Percent Saturation Resolution (Polarographic DO)	0.1, 1 % saturation
Keypad	Simple with highlighted measure key, scroll and shortcut keys
Outputs	None
Weight (English)	2 lb.
Resolution (Temperature)	0.1°C (0.1°F)
Temperature (Metric) Operating	5°C to 45°C (ambient)
Range (Polarographic DO)	0.00 to 20.00 mg/L
Percent Saturation Range (Polarographic DO)	0.0 to 200.0 % saturation

Thermo Scientific™ Orion Star™ A223 Dissolved Oxygen Portable Meter

Reliably measure dissolved oxygen (optical/polarographic) and temperature with this RDO/DO portable meter for advanced field analysis.

Pricing & Availability
Specifications

Temperature (Metric) Range	0.0°C to 50.0°C
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
Languages	English, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
Measurement Modes	Dissolved Oxygen (% Saturation),Dissolved Oxygen (mg/L with Temperature and Barometric Pressure)
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
Battery Life	800 hours
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
Calibration Modes	Water-saturated air, air-saturated water, manual (Winkler titration), zero point
Certifications/Compliance	CE, TUV 3-1, FCC Class A
Temperature Probe Calibration	1 point temperature offset calibration
Salinity Factor	0.0 to 45.0 ppt, automatic correction using manual entry of sample salinity
Stability	Smart Stability and Smart Averaging
Warranty	3 Year Meter Warranty
Sensor Types	RDO optical dissolved oxygen sensor or polarographic dissolved oxygen sensor
Percent Saturation Range Polarographic DO	0.0 to 600.0 % saturation
Log Function Type	Automatic with Auto-Read Measure Mode, Manual with Continuous Measure Mode
Battery Type	Four AA (included)
Relative Humidity Range	5 to 85 %, non-condensing
Range (RDO)	0.00 to 50.00 mg/L
Dimensions (L x W x H)	24 cm x 10 cm x 6.5 cm (9.5 in. x 3.9 in. x 2.6 in.)
Percent Saturation Range (RDO)	0.0 to 500.0 % saturation
Temperature Selection	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)
Percent Saturation Relative Accuracy (RDO)	±2 % saturation ≤ 200 % saturation, ±10 % saturation > 200 % saturation
Range (Polarographic DO)	0.00 to 90.00 mg/L
Accuracy (Barometer)	±6mmHg
Methods	10 per channel with password protection
Pressure Resolution	1mmHg
Channels	1
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	9 pin MiniDIN (RDO optical or polarographic DO sensor with built-in temperature)
Accuracy (Temperature)	±0.1°C
Weight (Metric)	0.5 kg
Temperature (English) Operating	41°F to 113°F (ambient)
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)
Alarm Output	Calibration due alarm (fixed 12 hour)
IP Rating	IP-67
Percent Saturation Resolution (Polarographic DO)	0.1, 1 % saturation
Model	Orion Star A223 RDO Optical/Dissolved Oxygen/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)
Percent Saturation Range (Polarographic DO)	0.0 to 600.0 % saturation
Accuracy (RDO)	±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L

Thermo Scientific™ Orion™ Pro Star DO213 Dissolved Oxygen Bench Meter

Designed to provide accurate and reliable dissolved oxygen, barometric pressure and temperature analysis, the Thermo Scientific™ Orion™ Pro Star DO213 bench meter is well suited for laboratories that desire a modern meter with advance performance.

Pricing & Availability
Specifications

Temperature (Metric) Range	-30.0°C to +130.0°C
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
Languages	Chinese, English, French, German, Italian, Japanese, Korean, Portuguese, Spanish
Measurement Modes	Dissolved Oxygen (mg/L with Temperature and Barometric Pressure),Dissolved Oxygen (ppm with Temperature and Barometric Pressure),Dissolved Oxygen (% Saturation with Temperature and Barometric Pressure)
Channels	1
Barometric Pressure Correction	Yes, automatic with built-in barometer or manual
Resolution (RDO)	0.1, 1% saturation; 0.01, 0.1 mg/L or ppm
Display Type	7-in. High-resolution Color Graphic LCD
Percent Saturation Resolution (RDO)	0.1, 1% saturation
Resolution (DO)	0.1, 1% saturation; 0.01, 0.1 mg/L or ppm
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)
Percent Saturation Relative Accuracy (Polarographic DO)	±2% saturation
Certifications/Compliance	CE, TUV 3-1, FCC Class A
Temperature Probe Calibration	1 or 2 point temperature offset calibration
Probe Type	Polarographic or optical DO electrode
Inputs	9-pin MiniDIN for dissolved oxygen with ATC
Accuracy (Temperature)	±0.3°C, ±0.5°F
Weight (Metric)	1.00 kg
Salinity Factor	0.0 to 50.0 ppt
Accuracy (DO)	±2% saturation; ±0.02 mg/L or ppm
Warranty	2 year meter warranty
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
Percent Saturation Range Polarographic DO	0.0 to 600.0% saturation
Log Function Type	Automatic with Auto-Read and Timed Read Modes, Manual with Continuous Read Mode
Relative Humidity Range	5 to 85%, non-condensing
Range (RDO)	0.0 to 600.0% saturation; 0.01 to 90.0 mg/L or ppm
Alarm Output	Calibration reminder alarm, high and low limit alarm per parameter
Dimensions (L x W x H)	218.9 x 153.2 x 91.33 mm; 8.62 x 6.03 x 3.60 in.
Percent Saturation Range (RDO)	0.0 to 600.0% saturation
IP Rating	IP54
Temperature Selection	Automatic with ATC temperature sensor, ambient or manual
Percent Saturation Resolution (Polarographic DO)	0.1, 1% saturation
Keypad	Capacitive touchscreen user interface
Model	DO213
Outputs	USB flash drive, computer or printer (STARA-106)
Backlight Option	Yes
Weight (English)	2.20 lbs.
Percent Saturation Relative Accuracy (RDO)	±2% saturation
Resolution (Temperature)	0.1°C, 0.1°F
Range (Polarographic DO)	0.0 to 600.0% saturation; 0.01 to 90.0 mg/L or ppm
Accuracy (Barometer)	±6.0 mmHg; ±0.008 bar
Range (DO)	0.0 to 600.0% saturation; 0.01 to 90.0 mg/L or ppm
Methods	10
Accuracy (RDO)	±2% saturation; ±0.02 mg/L or ppm

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

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

Pricing & Availability
Specifications

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

Promotions Available

METTLER TOLEDO™ S600 SevenExcellence™ Dissolved Oxygen Benchtop Meter Kit

The S600 meter kit includes a meter, electrode, and accessories to measure disolved oxygen (DO). The meter can be expanded with additional modules to measure pH, conductivity, and ISE. It has an intuitive touchscreen, measurement shortcuts, and can export data to a printer, Excel, or LIMS system.

Pricing & Availability

Thermo Scientific™ Orion Star™ A329 pH/ISE/Conductivity/Dissolved Oxygen Portable Multiparameter Meter

Accurately measure pH, ion concentration, conductivity, dissolved oxygen and temperature with our pH/ISE/conductivity/RDO/DO portable meter.

Pricing & Availability
Specifications

Salinity Measurement Modes	Practical salinity (psu) or natural sea water (ppt)
Resolution (Polarographic DO)	0.01, 0.1mg/L
Pressure Range	400 to 850mmHg
Range (Resistivity)	2 ohm to 100.0 meg-ohm
Memory	Non-volatile memory preserves data log, calibration log and meter settings
Advanced ISE Functions	Segmented (point-to-point) slope, non-linear selectable auto-blank, low concentration range stabilit
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
Resolution (ISE)	0.0001 minimum, 1 to 3 significant digits (user selectable)
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 conductivity reading or manual entry of sample salinity
Accuracy (mV)	±0.2 mV or ±0.05% of reading whichever is greater
Accuracy (ISE)	±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
Calibration Points (ISE)	1 to 5
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
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.)
Accuracy (TDS)	0.5% of reading ±1 digit
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
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	3
Accuracy (pH)	±0.002
Range (ISE)	0.0001 to 19900 with selectable units of ppm, Molar, mg/L, %, ppb or none
Range (Salinity)	0.06 to 80.00 psu, 0.05 to 42.00 ppt
Resolution (RDO)	0.01, 0.1mg/L
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
Percent Saturation Resolution (RDO)	0.1, 1 % saturation
Accuracy (Conductivity)	0.5% of reading ±1 digit > 3 μS; 0.5% of reading ±0.01 μS ≤ 3 μS
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 (conductivity sensor with built-in temperature or ATC temperature probe), 9 pin MiniDIN (RDO optical or polarographic DO sensor with built-in temperature)
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 (Polarographic DO)	±0.2mg/L or ±2% of reading, whichever is greater
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, ion concentration (ISE) with calibration editing option, relativ
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 A329 pH/ISE/mV/RmV/ORP/Conductivity/TDS/Salinity/Resistivity/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

Thermo Scientific™ Orion™ Versa Star Pro™ pH/ISE/Conductivity/Dissolved Oxygen Multiparameter Benchtop Meter

Get premium performance and flexibility with our multiparameter benchtop meter with pH/ISE, conductivity and RDO/DO modules to measure up to four channels at once.

Pricing & Availability
Specifications

Power Rating	DC input: 9VDC, 1A
Salinity Measurement Modes	Practical salinity (psu) or natural sea water (ppt)
Resolution (Polarographic DO)	0.01, 0.1mg/L
Pressure Range	400 to 850mmHg
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, Chinese, Portuguese and Korean
Measurement Modes	pH,mV,Relative mV,ORP,Ion Concentration (ISE) with Temperature,TDS,Conductivity,Salinity
Resolution (ISE)	0.0001 minimum, 1 to 4 significant digits (user selectable)
Power Supply	Universal AC adapter (included)
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
Display Type	Color graphic LCD with user-customizable options
Resolution (mV)	0.1mV
Data Points	2000 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 conductivity reading or manual entry of sample salinity
Accuracy (mV)	±0.2 mV or ±0.05% of reading whichever is greater
Accuracy (ISE)	±0.2 mV or ±0.05% of reading whichever is greater
Temperature Accuracy	±0.1°C
Stability	Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
Calibration Points (ISE)	1 to 6
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
Percent Saturation Range Polarographic DO	0.0 to 600.0% saturation
Relative Humidity Range	5 to 85%, non-condensing
Range (RDO)	0.00 to 50.00mg/L
Dimensions (L x W x H)	28 x 24 x 10cm (11 x 9.5 x 3.9 in.), modules add ≤ 2cm (0.8 in.) L & H
Accuracy (TDS)	0.5% of reading ±1 digit
Temperature Selection	Manual or automatic with ATC temperature probe
Percent Saturation Range (RDO)	0.0 to 500.0% saturation
Keypad	Numeric with menu-specific function keys and dual purpose scroll/shortcut keys
Outputs	USB (2), RS232
Temperature Range (English)	22.0°F to 221.0° F
Range (Relative mV)	±2000.0 mV
Calibration Points (pH)	1 to 6
Backlight Option	Yes
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)	±6 mmHg
Range (ORP)	±2000.0 mV
Pressure Resolution	0.1mmHg
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	4 (Customizable with modules)
Accuracy (pH)	±0.002
Range (ISE)	0.0001 to 19990 with selectable units of ppm, Molar, mg/L, %, ppb or none
Range (Salinity)	0.06 to 80.00 psu, 0.05 to 42.00 ppt
Resolution (RDO)	0.01, 0.1mg/L
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
Percent Saturation Resolution (RDO)	0.1, 1% saturation
Accuracy (Conductivity)	0.5% of reading ±1 digit > 3 μS; 0.5% of reading ±0.01 μS ≤ 3 μS
Weight (Metric)	1.2 kg, modules add 0.2 kg each
Calibration Points (Conductivity)	Up to 6
Temperature (English) Operating	41°F to 113°F (ambient)
Resolution (Resistivity)	1 ohm or 0.1 meg-ohm, auto ranging
Isopotential Point	7.000pH (adjustable), 1.000 ISE (adjustable)
Accuracy (Polarographic DO)	±0.2 mg/L or ±2% of reading, whichever is greater
Accuracy (Resistivity)	0.5% of reading ±1 digit
AC Adapter	Universal 50-60 Hz, 100-240 VAC power adapter (Cat. No. STARA-PWR)
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, ion concentration (ISE) with calibration editing option, relativ
Calibration Points	1 point relative mV (RmV) mode, 1 point ORP mode
Alarm Output	Set point alarm, high/low limit alarm, calibration due alarm
IP Rating	IP54
Percent Saturation Resolution (Polarographic DO)	0.1, 1% saturation
Weight (English)	2.5 lb., modules add 0.5 lb. each
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)	±0.1 mg/L up to 8 mg/L, ±0.2 mg/L from 8 to 20 mg/L, ±10% of reading up to 50 mg/L

YSI™ Pro2030 Field Dissolved Oxygen/Conductivity Meter

Measure DO, salinity, conductivity, specific conductance, TDS, barometric pressure and temperature

Pricing & Availability

Electrochemistry Meters

Electrochemistry Meters

Filtered Search Results

Selected Filters

Narrow Results

Narrow Results