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 125 results

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METTLER TOLEDO™ SevenExcellence™ S475 pH/Conductivity/ISE Benchtop Meter

The S475 meter performs pH, conductivity, resistivity, ion selective, salinity, TDS, Redox/ORP, and ISFET measurements. It can be expanded with an additional module to measure DO/BOD. It has an intuitive touchscreen, measurement shortcuts, and can export data to a printer, Excel, or LIMS system.

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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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METTLER TOLEDO™ S479 SevenExcellence™ pH/Conductivity/DO Benchtop Meter Kit

The S479 meter kit gives you everything you need to start measuring pH, conductivity, dissolved oxygen, BOD, resistivity, salinity, TDS, Redox/ORP, and ISFET all on one meter. It has an intuitive touchscreen, measurement shortcuts, and can export data to a printer, Excel file, or LIMS system.

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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 and 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

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 and 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™ Conductivity Meter SevenDirect SD30

The SevenDirect SD30 is an accurate and flexible benchtop meter for the determination of conductivity, total dissolved solids and salinity. The instrument is the replacement of the SevenCompact and is delivered with an EasyPlace sensor arm.

Pricing and Availability
Specifications

Range (Resistivity)	0 to 100 Mohm-cm
Resolution (Conductivity)	0.001 to 1
Memory	2000 Standard Measurements
Range (Conductivity)	0.001 μS/cm to 2000 mS/cm
Range (TDS)	0 g/L to 100 g/L
Measurement Modes	Conductivity
Channels	1
Range (Salinity)	0 to 80 ppt
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
Accuracy (Conductivity)	0.005
Data Points	2000
Temperature Range (English)	-22°F to +266°F
Weight (English)	1.9 lb.
Resolution (Temperature)	0.1°C
Temperature Range (Metric)	-30°C to +130°C
Accuracy (Temperature)	±0.1°C between 0°C and 100°C
Weight (Metric)	850 g

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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 and 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

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 and 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

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 and 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

Fisherbrand™ accumet™ XL500 Benchtop Dual pH/ISE and Conductivity Meters

Provide advanced measurements with simple operation and offer a large, vivid color touch-screen display that allows for dynamic functionality. Fisherbrand accumet XL500 dual pH/ISE/conductivity benchtop meters offer advanced features with simple operation to help ensure your measurements are reliable and your laboratory processes are efficient.

Pricing and Availability
Specifications

Length (Metric)	24.6 cm
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
Detection Range	Multiple
Length (English)	9.68 in.
Resolution (pH)	0.1/0.01/0.001
Cell Constant	0.01 to 10
Range (pH)	-2 to 20
Width (Metric)	17.3 cm
Resolution (ISE)	2/3/4 Digits
Accuracy (pH)	±0.002
Range (ISE)	±2000 mV
Range (Salinity)	0 to 80 ppt
Accuracy	Multiple
Data Management Details	3 to 86400 sec.
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	2000
Certifications/Compliance	NIST, ISO, FDA, USDA, EPA
Inputs	2 BNC, 2 ATC
Weight (Metric)	1.13 kg
Height (English)	3.89 in.
Calibration Points (Conductivity)	Automatic (4 points), maximum 1/range, manual (5 points), maximum 1/range
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
Resolution (Resistivity)	0.01/0.1W, 0.001/0.1kW, 0.01MW
Resolution (Conductivity)	0.001/0.01/0.1mS
Range (Conductivity)	0 to 500 mS
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
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)
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

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 and 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

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
Resolution (pH)	0.1, 0.01 or 0.001 pH
Languages	Chinese, English, French, German, Italian, Japanese, Korean, Portuguese, Spanish
Measurement Modes	pH,ORP,mV,Ion Concentration (ISE),Conductivity,Dissolved Oxygen (mg/L),Temperature,Barometric Pressure
Resolution (ISE)	0.0001 minimum, 1 to 5 digits
Barometric Pressure Correction	Yes, automatic with built-in barometer or manual
Display Type	7-in. High-resolution Color Graphic LCD
Resolution (mV)	0.1 mV
Resolution (Ion)	0.0001 minimum, 1 to 5 digits
Data Points	10,000 with Date and Time Stamp
Calibration Modes	Water-saturated air (100% and 0% saturation), air-saturated water (100% and 0% saturation) or custom concentration value (Winkler)
Temperature Probe Calibration	1 or 2 point temperature offset calibration
Certifications/Compliance	CE, TUV 3-1, FCC Class A
Probe Type	Polarographic or optical DO electrode
Salinity Factor	0.0 to 50.0 ppt; 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
Percent Saturation Range Polarographic DO	0.0 to 600.0% saturation
Range (RDO)	0.0 to 600.0% saturation; 0.01 to 90.0 mg/L or ppm
Dimensions (L x W x H)	218.9 x 153.2 x 91.33 mm; 8.62 x 6.03 x 3.60 in.
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
Channels	3
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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METTLER TOLEDO™ SevenExcellence™ S700 Conductivity Benchtop Meter

The S700 meter measures conductivity, resistivity, TDS, and salinity. Its capabilities can be expanded with additional modules to measure pH, dissolved oxygen, ISE, BOD, Redox/ORP, and ISFET. Features an intuitive touchscreen and the ability to create measurement shortcuts.

Pricing and Availability
Specifications

Calibration Points	13 Pre defined and 20 user defined standard
Temperature Compensation	20°C
Range (Resistivity)	0.01 to 100 megohm/cm
Range (Conductivity)	0.001 μS/cm to 2000 mS/cm
Accuracy (Conductivity)	±0.5%
Sensor Types	Conductivity
Data Points	At least 20000 data points, 250 analyses
Range (TDS)	0.001 mg/L to 1000 g/L
Resolution (Temperature)	0.1°C
Temperature Range (Metric)	-30°C to +130°C
Inputs	Integrated interfaces (USB, RS232 and Ethernet)
Accuracy (Temperature)	±0.1°C
Range (Salinity)	0 to 80 psu

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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.

Pricing and Availability
Specifications

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

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Mettler Toledo™ FiveEasy™ F30 Conductivity Meters

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

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Specifications

Resolution (Conductivity)	Automatic range
Memory	Current calibration
Range (Conductivity)	0.01 μS/cm to 200 mS/cm
Range (TDS)	0 mg/L to 300 mg/L
Measurement Modes	Conductivity
Calibration	One point calibration with three predefined standards
Range (Salinity)	0 to 42 psu
Dimensions (L x W x H)	22.7 x 14.7 x 7 cm (9 x 5.7 x 2.7 in.)
Temperature Compensation	Linear: 0.00%/°C to 10.00%/°C, reference temperature: 20° and 25°C
Display Type	LCD
Voltage	100/240 V
Accuracy (Conductivity)	±0.5% of the measured value
Model	F30
Frequency	50/60Hz
Data Points	200
Temperature Range (English)	32°F to 212°F
Weight (English)	1.4 lb.
Resolution (Temperature)	0.1°C
Temperature Range (Metric)	-5°C to +105°C
Inputs	Mini-DIN
Accuracy (Temperature)	0.5°C
Weight (Metric)	0.63 kg

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Mettler Toledo™ Conductivity Meter SevenDirect SD30 Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Mettler Toledo™ Conductivity Meter SevenDirect SD30