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.

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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!

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Specifications

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
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

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Thermo Scientific™ Eutech™ ORPTestr10 ORP Meter

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

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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 and 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
Languages	English,Spanish,French,Italian,German,Chinese,Portuguese,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
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
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

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 and 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,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
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	IP67
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

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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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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!

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Specifications

Temperature Accuracy	Manual input
Temperature Range (English)	32.0°F to 140.0°F
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

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Fisherbrand™ accumet™ AR450 pH/ion/Conductivity Meter Kit

Designed to deliver precise and reliable electrochemistry testing, the accumet AR450 offers enhanced performance in a streamlined design. Ideal for laboratories requiring dependable measurement capabilities.

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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.

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Thermo Scientific™ Eutech™ ECTestr11+ Multi Range Conductivity Tester

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

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Thermo Scientific™ Eutech™ CON 150 Conductivity Meter

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

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Thermo Scientific™ Eutech™ PC 450 Multi-parameter Meter Kit

Measure multiple parameters in a cost-effective and convenient way by using only one Eutech™ multi-parameter meter.

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Eutech Expert CTS Pocket Tester

Ensure accurate measurements of Conductivity, TDS, Salinity, and Temperature using the easy-to-use, large 4-digit display pocket tester for many applications.

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Thermo Scientific™ Eutech™ TDSTestr11 Dual Range TDS Tester

Get quick and accurate Total Dissolved Solids (TDS) measurements in the field, laboratories, and schools.

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Thermo Scientific™ Orion™ Pro Star MP218 pH/ion, Conductivity and DO Bench Meter

Designed to provide accurate and reliable pH, ORP, ion, conductivity, TDS, salinity, resistivity, DO, barometric pressure and temperature analysis, the Thermo Scientific™ Orion™ Pro Star MP218 bench meter is well suited for laboratories that desire a modern meter with advance performance.

Pricing and Availability
Specifications

Salinity Measurement Modes	Natural Seawater (ppt), Practical Salinity Units (PSU), or % NaCl
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
Range (Resistivity)	1.0Ω to 100.0 MΩ
Memory	Non-volatile
Advanced ISE Functions	Single known addition, single known subtraction, double known addition, double known subtraction, analyte addition and analyte subtraction
Languages	Chinese,English,French,German,Italian,Japanese,Korean,Portuguese,Spanish
Measurement Modes	pH,ORP,mV,Ion Concentration (ISE),Conductivity,Dissolved Oxygen (mg/L),Temperature,Barometric Pressure
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; automatic with conductivity measurement or manual entry
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
Resolution (Conductivity)	0.001 μS/cm minimum, auto-ranging, up to 4 digits
Range (Conductivity)	0.010 μS/cm to 3000 mS/cm
Log Function Type	Automatic with Auto-Read and Timed Read Modes, Manual with Continuous Read Mode
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.
Accuracy (TDS)	±0.5% reading
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 (30 total)
Cell Constant	0.100 cm-1, 0.475 cm-1, 0.550 cm-1, 1.000 cm-1, 10.00 cm-1 or user-defined from 0.001 to 199.9 cm-1
Temperature (Metric) Reference	5, 10, 15, 20, 25 or 30°C
Range (pH)	-2 to 20
TDS Factor Range	Linear (0.01 to 10.00), ISO/EN 27888, 442, NaCl
Accuracy (pH)	±0.002 pH
Range (ISE)	0.0001 to 19999
Range (Salinity)	0.010 to 80.00 ppt; 0.01 to 42.00 PSU; or 0.01 to 400.0% NaCl
Resolution (RDO)	0.1, 1% saturation; 0.01, 0.1 mg/L or ppm
Temperature Compensation	Linear (0.00 to 10.00 %/°C), nLFn (non-linear natural water), nLFu (non-linear ultra-pure water), EP/USP or off
Accuracy (Salinity)	±0.5% reading
Resolution (Salinity)	0.001 ppt minimum; 0.01 PSU minimum; or 0.01% NaCl minimum, auto-ranging
Percent Saturation Resolution (RDO)	0.1, 1% saturation
Accuracy (Conductivity)	±0.5% reading
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: 8-pin MiniDIN for conductivity with ATC; Channel 3: 9-pin MiniDIN for dissolved oxygen with ATC
Weight (Metric)	1.00 kg
Resolution (ORP)	0.1 mV
Calibration Points (Conductivity)	1 to 5 points
Accuracy (DO)	±2% saturation; ±0.02 mg/L or ppm
Resolution (Resistivity)	0.1 Ωminimum, auto-ranging
Isopotential Point	7.000 pH; 1.000 ion concentration
Accuracy (Polarographic DO)	±2% saturation; ±0.02 mg/L or ppm
Accuracy (Resistivity)	±0.5% reading
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
Range (TDS)	0.010 ppm to 500.0 ppt (TDS factor of 1.00); or 0.010 mg/L to 500.0 g/L (TDS factor of 1.00)
Resolution (TDS)	0.001 ppm or mg/L minimum, auto-ranging, up to 4 digits
Calibration	pH, ORP, Ion Concentration, Conductivity, TDS, Salinity, 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 5 (conductivity), 1 to 5 (TDS), 1 (salinity), 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

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Thermo Scientific™ Orion™ Pro Star PC215 pH/ion and Conductivity Bench Meter with Stand

Designed to provide accurate and reliable pH, ORP, ion concentration, conductivity, TDS, salinity, resistivity and temperature analysis, the Thermo Scientific™ Orion™ Pro Star PC215 bench meter is well suited for laboratories that desire a modern meter with advance performance.

Pricing and Availability
Specifications

Salinity Measurement Modes	Natural Seawater (ppt), Practical Salinity Units (PSU), or % NaCl
Range (Resistivity)	1.0 Ω to 100.0 MΩ
Memory	Non-volatile
Advanced ISE Functions	Single known addition, single known subtraction, double known addition, double known subtraction, analyte addition and analyte subtraction
Languages	Chinese,English,French,German,Italian,Japanese,Korean,Portuguese,Spanish
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
Temperature Probe Calibration	1 or 2 point temperature offset calibration
Certifications/Compliance	CE, TUV 3-1, FCC Class A
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
Resolution (Conductivity)	0.001 μS/cm minimum, auto-ranging, up to 4 digits
Range (Conductivity)	0.010 μS/cm to 3000 mS/cm
Log Function Type	Automatic with Auto-Read and Timed Read Modes, Manual with Continuous Read Mode
Dimensions (L x W x H)	218.9 x 153.2 x 91.33 mm; 8.62 x 6.03 x 3.60 in.
Accuracy (TDS)	±0.5% reading
Temperature Selection	Automatic with ATC temperature sensor, ambient or manual
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
Range (mV)	-2000 to 2000 mV
Range (ORP)	-2000 to 2000 mV
Methods	10 per channel (20 total)
Cell Constant	0.100 cm-1, 0.475 cm-1, 0.550 cm-1, 1.000 cm-1, 10.00 cm-1 or user-defined from 0.001 to 199.9 cm-1
Temperature (Metric) Reference	5, 10, 15, 20, 25 or 30°C
Range (pH)	-2 to 20
TDS Factor Range	Linear (0.01 to 10.00), ISO/EN 27888, 442, NaCl
Accuracy (pH)	±0.002 pH
Range (ISE)	0.0001 to 19999
Range (Salinity)	0.010 to 80.00 ppt; 0.01 to 42.00 PSU; or 0.01 to 400.0% NaCl
Temperature Compensation	Linear (0.00 to 10.00 %/°C), nLFn (non-linear natural water), nLFu (non-linear ultra-pure water), EP/USP or off
Accuracy (Salinity)	±0.5% reading
Resolution (Salinity)	0.001 ppt minimum; 0.01 PSU minimum; or 0.01% NaCl minimum, auto-ranging
Accuracy (Conductivity)	±0.5% reading
Inputs	Channel 1: BNC for pH, ORP or ISE, 8-pin MiniDIN for ATC, pin-tip for reference; Channel 2: 8-pin MiniDIN for conductivity with ATC
Weight (Metric)	1.00 kg
Resolution (ORP)	0.1 mV
Calibration Points (Conductivity)	1 to 5 points
Resolution (Resistivity)	0.1 Ω minimum, auto-ranging
Isopotential Point	7.000 pH; 1.000 ion concentration
Accuracy (Resistivity)	±0.5% reading
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
Range (TDS)	0.010 ppm to 500.0 ppt (TDS factor of 1.00); or 0.010 mg/L to 500.0 g/L (TDS factor of 1.00)
Resolution (TDS)	0.001 ppm or mg/L minimum, auto-ranging, up to 4 digits
Calibration	pH, ORP, Ion Concentration, Conductivity, TDS, Salinity, 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 5 (conductivity), 1 to 5 (TDS), 1 (salinity), 1 to 2 (temperature)
Alarm Output	Calibration reminder alarm, high and low limit alarm per parameter
IP Rating	IP54
Weight (English)	2.20 lbs.
Range (Ion)	0.0001 to 19999
Temperature Range (Metric)	-30.0°C to +130.0°C
Temperature Resolution	0.1°C, 0.1°F

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Thermo Scientific™ Orion™ Versa Star Pro™ pH/ISE/Conductivity/Dissolved Oxygen Multiparameter Benchtop Meter SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Thermo Scientific™ Orion Star™ A323 Dissolved Oxygen Portable Meter SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

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

Thermo Scientific™ Orion Star™ A323 Dissolved Oxygen Portable Meter