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pH and Electrochemistry

Instruments and other methods to measure pH, conductivity, specific ions, dissolved oxygen, and other parameters; may be handheld or benchtop and manual or electronic (analog or digital); includes pH indicator papers, electrodes, and other probes.

pH and electrochemistry meters and related products are used to assess acidity and alkalinity, conductivity, specific ion concentrations, and dissolved oxygen in water, wastewater, and other solutions. Electrochemistry meters may measure a single parameter (like pH) or they may be multiparameter meters, capable of performing a combination of tests (pH plus conductivity, for example).

Electrochemistry meters are used with various probes and electrodes designed for specific purposes or types of solutions. Electrodes with epoxy bodies are useful for testing food, beverages, and other materials where broken glass could be a problem. Other electrodes are made to withstand higher than usual impact; for use with solutions that contain large particulates; and for compatibility with biological buffers.

Electrodes must be carefully stored and maintained for optimal performance. It’s important to select the right storage bottles and electrode filling, cleaning, rinsing, and storage accessories.

Electrochemistry meters also require regular calibration and maintenance. Standard and certified pH buffers as well as conductivity and specific ion standards are available. Other accessories include electrode supports, bulb guards, cables, connectors, and adapters.

Indicator paper and test strips are another simple, portable, and qualitative way to quickly determine pH and other analytes. The paper or strips contain chemical indicators that produce color reactions. A comparison chart (included) helps to interpret the results. Available in various pH ranges, these are sometimes called “litmus” paper.

Electrochemistry Meters (38)
pH and Electrochemistry Meter Accessories (5)

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1 – 15 of 19 results
1

Thermo Scientific™ Orion Star™ A123 Dissolved Oxygen Portable Meter
BIOPHARMA

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

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
3

WTW™ Replacement Flow Through Vessel
GREENER_CHOICE

Perfectly designed to perform measurements without the interference of carbon dioxide through the air or to examine to conductivity of solutions in closed circuits.

4

METTLER TOLEDO™ Seven2Go S7 Conductivity Meter

The Seven2Go portables are engineered to provide users with fast quality data, one-handed operation, and durability, making them ideally suited for mobile applications in the laboratory, at-line, and outdoors.

Range (Resistivity) 0.00 to 100.0 Mohm/cm
Measurement Modes Conductivity
Cell Constant Manual entry
Range (pH) 0 to 14
Channels 1
Range (Salinity) 0.00 to 42 psu
Temperature Compensation Automatic or Manual
Battery Life 200 to 250 hr.
Display Type Color Graphic
Accuracy (Salinity) ±0.5%
Resolution (Salinity) 0.01 to 0.1
Accuracy (Conductivity) ±0.5%
Certifications/Compliance ISO 9001:2000
Inputs LTW 7-pin (sensor)
Weight (Metric) 290 g
Resolution (Conductivity) 0.01
Range (Conductivity) 0.01 μS/cm to 1000 mS/cm
Range (TDS) 0.01 mg/L to 600 g/L
Resolution (TDS) 0.01 to 1
Battery Type 4 x 1.5 V AA or 1.3 V NiMH acc.
Calibration Points 1
Dimensions (L x W x H) 222 x 70 x 35 mm
Accuracy (TDS) ±0.5%
IP Rating IP67
Model Single channel; conductivity, TDS, salinity
Temperature Range (Metric) -5°C to +105°C
5
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.

IP Rating IP67
Certifications/Compliance ISO 9001:2000
6

Thermo Scientific™ Orion Star™ A323 Dissolved Oxygen Portable Meter
BIOPHARMA

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

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
7

Thermo Scientific™ Orion Star™ A223 Dissolved Oxygen Portable Meter
BIOPHARMA

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

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
8

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

Get premium performance and flexibility with this benchtop meter with module for dissolved oxygen (optical/polarographic) and temperature.

Power Rating DC input: 9VDC, 1A
Temperature (Metric) Range -5.0°C to +105.0°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, Chinese, Portuguese and Korean
Measurement Modes Dissolved Oxygen (% Saturation),Dissolved Oxygen (mg/L with Temperature and Barometric Pressure)
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
Data Points 2000 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 and module 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, Timed and Single Shot measure modes; manual data logging with
Relative Humidity Range 5 to 85 %, non-condensing
Range (RDO) 0.00 to 50.00 mg/L
Dimensions (L x W x H) 28 cm x 24 cm x 10 cm (11 in. x 9.5 in. x 3.9 in.), modules add ≤ 2 cm (0.8 in.) L & H
Percent Saturation Range (RDO) 0.0 to 500.0 % saturation
Temperature Selection 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
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
Pressure Resolution 0.1mmHg
Channels 4 (Customizable with modules)
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), two stirrer inputs (stirrer probe)
Accuracy (Temperature) ±0.1°C
Weight (Metric) 1.2 kg, modules add 0.2 kg each
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 (Cat. No. STARA-PWR)
Alarm Output Set point alarm, high/low limit alarm, calibration due alarm
IP Rating IP-54
Percent Saturation Resolution (Polarographic DO) 0.1, 1 % saturation
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)
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
9

Thermo Scientific™ Orion™ Versa Star pH Measurement Module

Add pH, mV, ORP and temperature measurement capabilities to your Versa Star meter using the Thermo Scientific™ Orion™ Versa Star pH Measurement Module

10

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
11

Thermo Scientific™ Orion™ Versa Star pH / LogR Measurement Module

Add pH, mV, ORP and LogR temperature measurement capabilities to your Versa Star meter using the Thermo Scientific™ Orion™ Versa Star pH / LogR Measurement Module

12
Promotions Available

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.

13

Thermo Scientific™ Orion™ Versa Star Dissolved Oxygen / RDO Measurement Module

Add dissolved oxygen and temperature measurement capabilities to your Versa Star meter using the Thermo Scientific™ Orion™ Versa Star Dissolved Oxygen / RDO Measurement Module

14

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

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

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
15

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

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.

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