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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Fisherbrand™ accumet™ AB250 Benchtop pH/ISE Meters

Provides intuitive, simple operation and high accuracy measurements in a compact, affordable meter. Fisherbrand accumet AB250 pH/ISE meter provides flexible measurements of pH or ion concentration using an ion selective electrode (ISE) in one easy to use, reliable measurement system.

Pricing & Availability
Specifications

Accuracy (mV)	±0.2 mV
Accuracy (ISE)	0.5% full scale (monovalent ion), 1% full scale (divalent ion)
Warranty	3 Years
Temperature Accuracy	±0.3°C
Calibration Points (ISE)	2 to 6 points from one of following group, 0.001, 0.01, 0.1, 1, 10, 100, 0.01, 0.1, 1, 10, 100, 1000
Resolution (pH)	0.1/0.01/0.001
Range (pH)	-2 to 20
Resolution (ISE)	0.001/0.01/0.1/1 (automatic)
Accuracy (pH)	±0.002
Range (ISE)	0.001 to 19999 (±2000)
Data Management Details	Manual, timed (selectable every 3 to 3600 sec.), printer or CSV format
Display Type	LCD
Voltage	100/240 V
Resolution (mV)	0.1mV
Outputs	RS232 (phono plug), mini-B USB, stirrer
Frequency	50/60Hz
Data Points	500
Calibration Points (pH)	Up to 6 preset or 5 custom
Range (mV)	±2000 mV
Inputs	BNC, ATC
Temperature Resolution	0.1°C

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METTLER TOLEDO™ SevenExcellence™ S470 pH/Conductivity Benchtop Meter

The S470 meter measures pH, conductivity, resistivity, redox/ORP, TDS, salinity, and ISFET. It can be expanded with additional modules to measure dissolved oxygen, BOD, and ISE. It has an intuitive touchscreen, measurement shortcuts, and can export data to a printer, Excel file, or LIMS system.

Pricing & Availability
Specifications

Range (Resistivity)	0.01 to 100 Mohm/cm
Resolution (pH)	0.001/0.01/0.1
Range (pH)	-2 to 20
Resolution (ISE)	0.001 to 1
Accuracy (pH)	±0.002
Range (ISE)	0 to 999999mg/L
Range (Salinity)	0 to 80 ppt
Display Type	TFT
Resolution (Salinity)	0.001 to 1
Accuracy (Conductivity)	±0.5%
Resolution (mV)	0.1/1mV
Data Points	20,000
Calibration Points (Conductivity)	13 Pre defined and 20 user defined standard
Accuracy (mV)	±0.1mV
Temperature Accuracy	±0.1°C
Calibration Points (ISE)	Max. 5 points, 8 pre defined and 20 user defined buffer group
Resolution (Resistivity)	0.001 to 1
Resolution (Conductivity)	0.001μS/cm to 2000mS/cm
Range (Conductivity)	0.001 μS/cm to 2000 mS/cm
Range (TDS)	0.001 mg/L to 1000 g/L
Resolution (TDS)	0.001 to 1
Outputs	RS232, USB-A, USB-B, LAN, Mini-LTW, Mini-DIN, BNC, Cinch/RCA
Calibration Points (pH)	Max. 5 points, 8 pre defined and 20 user defined buffer group
Temperature Range (Metric)	-30°C to +130°C
Range (mV)	-2000 to 2000 mV
Temperature Resolution	0.1°C

Fisherbrand™ accumet™ XL250 Benchtop pH/ISE Dual Channel Meters

Provide advanced pH and ion measurements with simple operation and offer a large, vivid color touch-screen display. Fisherbrand accumet XL250 pH/ISE dual channel benchtop meters offer advanced features with simple operation to help ensure your measurements are reliable and your laboratory processes are efficient.

Pricing & Availability
Specifications

Length (Metric)	24.6 cm
Detection Range	Multiple
Length (English)	9.68 in.
Resolution (pH)	0.1/0.01/0.001
Range (pH)	-2 to 20
Width (Metric)	17.3 cm
Resolution (ISE)	2/3/4 Digits
Accuracy (pH)	±0.002
Range (ISE)	±2000 mV
Accuracy	Multiple
Data Management Details	3 to 86400 sec.
Display Type	LCD
Voltage	100/240 V
Resolution (mV)	0.1mV
Data Points	2000
Certifications/Compliance	NIST, ISO, FDA, USDA, EPA
Inputs	2 BNC, 2 ATC
Weight (Metric)	1.13 kg
Height (English)	3.89 in.
Height (Metric)	9.9 cm
Accuracy (mV)	±0.2 mV
Accuracy (ISE)	0.5% full scale (monovalent ion), 1% full scale (divalent ion)
Warranty	3 Years
Temperature Accuracy	±0.3°C
Calibration Points (ISE)	2 to 6
Dimensions (L x W x H)	24.6 x 17.3 x 9.9cm (9.7 x 6.8 x 3.9 in.)
Outputs	RS232, USB-A, Mini-B USB, RJ45, stirrer port (2)
Frequency	50/60Hz
Calibration Points (pH)	Up to 6 preset or 5 custom
Weight (English)	2.5 lb.
Range (mV)	±2000 mV
Temperature Resolution	0.1°C
Resolution	Multiple

Fisherbrand™ accumet™ AB200 Benchtop pH/Conductivity Meters

Provides intuitive, simple operation and high accuracy measurements in a compact, affordable meter. Fisherbrand accumet AB200 pH/conductivity meter combines the benefits of a pH meter and conductivity meter in one easy to use, reliable measurement system. The large backlit display offers great visibility in laboratory environments.

Pricing & Availability
Specifications

Range (Resistivity)	2 W to 20 MW
Resolution (pH)	0.1/0.01/0.001
Cell Constant	0.010 to 10.000
Range (pH)	-2 to 20
Accuracy (pH)	±0.002
Range (Salinity)	0 to 80 ppt
Data Management Details	Manual, timed (selectable every 3 to 3600 sec.), printer or CSV format
Display Type	LCD
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 (mV)	0.1mV
Data Points	500
Inputs	BNC, ATC
Calibration Points (Conductivity)	Automatic (4 points), maximum 1/range, manual (5 points), maximum 1/range
Accuracy (mV)	±0.2 mV
Warranty	3 Years
Temperature Accuracy	±0.3°C
Resolution (Resistivity)	0.01/0.1W, 0.001/0.1kW, 0.01MW
Resolution (Conductivity)	0.01/0.1μS, 0.001/0.01/0.1mS
Range (Conductivity)	0 μS to 500 mS
Accuracy (Resistivity)	± 1% full scale
Range (TDS)	0 ppm to 500 ppt (at TDS factor 1)
Resolution (TDS)	0/0.1ppm, 001/01/0.1ppt
Accuracy (TDS)	± 1% full scale
Outputs	RS232 (phono plug), mini-B USB, stirrer
Frequency	50/60Hz
Calibration Points (pH)	Up to 6 preset or 5 custom
Range (mV)	±2000 mV
Temperature Resolution	0.1°C

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Mettler Toledo™ S975 SevenExcellence™ pH/Conductivity/Ion/DO Meter Kit

Professional modular triple-channel instrument for measuring ion concentrations, pH, mV/ORP, rel. mV, conductivity, salinity, TDS, resistivity and conductivity ash

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

Get premium performance and flexibility with our benchtop meter with pH and conductivity modules for simultaneous pH, conductivity, and temperature.

Pricing & Availability
Specifications

Power Rating	DC input: 9VDC, 1A
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, Chinese, Portuguese and Korean
Measurement Modes	pH,mV,Relative mV,TDS,ORP with Temperature,Salinity,Conductivity,Resistivity with Temperature
Power Supply	Universal AC adapter (included)
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
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 and module warranty
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, Timed and Single Shot measure modes; manual data logging with
Relative Humidity Range	5 to 85 %, non-condensing
Dimensions (L x W x H)	28cm x 24cm x 10cm (11 in. x 9.5 in. 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
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
Range (mV)	±2000.0 mV
Range (ORP)	±2000.0 mV
Methods	10 per channel
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 (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 (ATC temperature probe), 8 pin MiniDIN (conductivity sensor with built-in temperature), two stirrer inputs (stirrer probe)
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)
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, relative mV (RmV), ORP, conductivity with calibration editing op
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
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
Temperature Resolution	0.1°C, 0.1°F

Fisherbrand™ accumet™ Basic AB330 Benchtop Laboratory Conductivity Meter

Ideal for daily conductivity, TDS and salinity testing of your routine laboratory samples, the accumet™ Basic AB330 Benchtop Meter provides essential functions needed without complicated functions at a budget-friendly price.

Pricing & Availability
Specifications

Memory	Non-volatile
Cell Constant	0.1 to 10
Measurement Modes	Conductivity with Temperature,TDS with Temperature,Salinity with Temperature
Temperature (Metric) Reference	15, 20, 25 or 30°C
Temperature Coefficient	0 to 10 %/°C
TDS Factor Range	0.4 to 1
Range (Salinity)	0 to 80 ppt
Data Management Details	Printed or CSV Format
Temperature Compensation	Linear
Display Type	5 in. LCD
Accuracy (Salinity)	±1% Full Scale
Resolution (Salinity)	0.01, 0.1 ppt
Voltage	100/240 V
Accuracy (Conductivity)	±1% Full Scale
Data Points	500
Inputs	Conductivity, ATC
Accuracy (Temperature)	±0.3°C (±0.5°F)
Calibration Points (Conductivity)	84 μS, 1413 μS, 12.88 mS, 111.8 mS
Stability	Indicator Icons
Warranty	3 Years
Resolution (Conductivity)	0.01, 0.1, 1 μS; 0.01, 0.1 mS
Range (Conductivity)	0 μS to 500 mS
AC Adapter	Universal Power Adapter
Resolution (TDS)	0.01, 0.1, 1 ppm; 0.01, 0.1 ppt
Calibration	Conductivity, TDS, Salinity, Temperature
Calibration Points	1 to 5 (Conductivity), 1 to 5 (TDS), 1 (Salinity), 1 (Temperature)
Accuracy (TDS)	±1% Full Scale
IP Rating	IP54
Data Logging	Automatic with Auto-read and Timed Modes, Manual with Continuous Mode
Model	AB330
Outputs	Port for Computer or Printer
Frequency	50/60 Hz
Backlight Option	Yes
Resolution (Temperature)	0.1°C (0.1°F)
Temperature Range (Metric)	-5°C to +105°C

Thermo Scientific™ Elite ORP Pocket Testers and Replacement Sensors

Flexible on-the-go ORP testing using durable Elite ORP pocket testers with replaceable sensors for a variety of applications including hydroponics, food and beverage, environmental and more!

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Thermo Scientific™ Orion Star™ A122 Conductivity Portable Meter

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

Pricing & Availability
Specifications

Memory	Non-volatile memory preserves log and settings
Languages	English
Cell Constant	0.001 to 10cm-1
Measurement Modes	Conductivity,TDS with Temperature
Temperature (Metric) Reference	20, 25°C
Channels	1
TDS Factor Range	Linear (0.02 to 9.99)
Power Supply	4 AA batteries (included) or universal AC adapter (sold separately)
Battery Life	2000 hr.
Data Management Details	Internal data point memory
Temperature Compensation	Linear
Display Type	LCD
Accuracy (Conductivity)	0.5% of reading ±1 digit
Data Points	50
Certifications/Compliance	CE, TUV 3-1, FCC Class A
Temperature Probe Calibration	1 point temperature offset calibration
Inputs	8 pin MiniDIN (conductivity sensor with built-in temperature)
Accuracy (Temperature)	±0.1°C
Weight (Metric)	0.5 kg
Calibration Points (Conductivity)	1
Stability	Smart Stability and Smart Averaging
Warranty	3 Year Meter
Temperature (English) Operating	41°F to 113°F (ambient)
Resolution (Conductivity)	0.01 μS minimum, auto ranging up to 3 significant digits
Range (Conductivity)	0.01 μS/cm to 200.0 mS/cm
AC Adapter	Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
Log Function Type	Automatic with Auto-Read Measure Mode, Manual with Continuous Measure Mode
Range (TDS)	1 to 19,999 mg/L
Resolution (TDS)	1 mg/L
Calibration	Conductivity and temperature
Battery Type	4 x AA (included)
Relative Humidity Range	5 to 85%, non-condensing
Dimensions (L x W x H)	24 x 10 x 6.5 cm (9.5 x 3.9 x 2.6 in.)
Accuracy (TDS)	0.5% of reading ±1 digit
IP Rating	IP67
Temperature Selection	Manual or automatic with ATC temperature probe
Keypad	Simple with highlighted measure key, scroll and shortcut keys
Model	Orion Star A122 Conductivity/TDS/Temperature Portable Meter
Outputs	None
Weight (English)	2 lb.
Resolution (Temperature)	0.1°C (0.1°F)
Temperature (Metric) Operating	5°C to 45°C (ambient)
Temperature Range (Metric)	-5°C to +105°C
Compatible Probes	2-cell or 4-cell conductivity sensors with built-in temperature

Thermo Scientific™ Orion Star™ 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

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Mettler Toledo™ FiveGo™ F3 Conductivity Meters

Portable meter provides reliable and high quality conductivity measurements with simple click of a button

Pricing & Availability
Specifications

Memory	200 measurements
Range (Conductivity)	0.00 μS/cm to 200 mS/cm
Languages	Chinese, Chinese (TW), Croatian, Czech, Danish, Dutch, English (GB), English (US), French, German, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (BR), Russian, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Vietnamese
Range (TDS)	0 mg/L to 200 g/L
Measurement Modes	Conductivity
Calibration	One point calibration with three predefined standards
Channels	1
Dimensions (L x W x H)	18.8 x 7.7 x 3.3 cm (97.4 x 3 x 1.3 in.)
Temperature Compensation	Linear: 0.00%/°C to 10.00%/°C, reference temperature: 20° and 25°C
Display Type	LCD
IP Rating	IP67
Accuracy (Conductivity)	±0.5% of the measured value
Data Points	200
Weight (English)	0.5 lb.
Resolution (Temperature)	0.1°C
Temperature Range (Metric)	0°C to 100°C
Inputs	LTW 7-pin
Accuracy (Temperature)	±0.5°C
Weight (Metric)	0.26 kg

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

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METTLER TOLEDO™ SevenExcellence™ S500 pH/ISE Benchtop Meter

The S500 meter performs ion selective (ISE), pH, redox/ORP, and ISFET measurements. It can be expanded with additional modules to measure conductivity, resistivity, DO, salinity, TDS, and BOD. It has an intuitive touchscreen and the ability to create measurement shortcuts.

Pricing & Availability
Specifications

Range (Resistivity)	0.001 μS/cm to 2000 mS/cm
Memory	250 analyses (20.000 data points)
Resolution (pH)	0.001/0.01/0.1
Languages	Chinese, Chinese (TW), Croatian, Czech, Danish, Dutch, English (GB), English (US), French, German, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (BR), Russian, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Vietnamese
Range (pH)	-2 to 20
Range (Concentration)	0.001 to 999999mg/L ppm, 0.0001 to 100mol/L %, 0.001 to 100000mmol/L
Resolution (ISE)	0.001 to 1
Channels	1
Accuracy (pH)	±0.002
Range (ISE)	0 to 999999mg/L
Range (Salinity)	0.001 μS/cm to 2000 mS/cm
Display Type	TFT
Resolution (Salinity)	0.001 to 1
Resolution (mV)	0.1/1mV
Data Points	20,000
Calibration Points (Conductivity)	13 Pre defined and 20 user defined standard
Accuracy (mV)	±0.1mV
Temperature Accuracy	±0.1°C
Calibration Points (ISE)	Max. 5 points, 8 pre defined and 20 user defined buffer group
Resolution (Resistivity)	0.001 to 1
Resolution (Conductivity)	0.001 to 1
Accuracy (Concentration)	±0.5%
Range (Conductivity)	0.001 μS/cm to 2000 mS/cm
Range (TDS)	0.001 μS/cm to 2000 mS/cm
Resolution (TDS)	0.001 to 1
Outputs	RS232, USB-A, USB-B, LAN, Mini-LTW, Mini-DIN, BNC, Cinch/RCA
Calibration Points (pH)	Max. 5 points, 8 pre defined and 20 user defined buffer group
Temperature Range (Metric)	-30°C to +130°C
Range (mV)	-2000 to 2000 mV
Temperature Resolution	0.1°C

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METTLER TOLEDO™ SevenGo Duo pH/Ion/DO Meter SG98-EL-Kit

A high precision dual-channel pH/ optical DO meter for simultaneous analysis of two electrochemical parameters. Easy text guided operation.

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Mettler Toledo™ pH/Ion Meter SevenDirect SD50

The SevenDirect SD50 is an accurate and flexible benchtop meter for the determination of pH, ORP and ion concentrations. The instrument is the replacement of the SevenCompact and is delivered with an EasyPlace sensor arm.

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Specifications

Temperature Accuracy	±0.1°C between 0°C and 100°C
Memory	2000 Standard Measurements
Resolution (pH)	0.1, 0.01, 0.001
Measurement Modes	pH
Range (pH)	-2.000 to 20.000
Accuracy (Ion)	0.5 %
Channels	1
Accuracy (pH)	0.002
Dimensions (L x W x H)	195 x 205 x 65 mm
Data Management Details	PC, Printer, USB Stick
Display Type	Color TFT
IP Rating	IP54
Resolution (Ion)	3 or 4 digits (auto-range)
Temperature Range (English)	-22°F to +266°F
Range (Ion)	-2,000 to 20,000 pX, 0 to 999,999 mg/L (ppm)
Temperature Range (Metric)	-30°C to +130°C
Range (mV)	-2000 to 2000 mV
Temperature Resolution	0.1°C

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Mettler Toledo™ pH/Ion Meter SevenDirect SD50 Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Mettler Toledo™ pH/Ion Meter SevenDirect SD50