
Multiparameter Meters
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Filtered Search Results

Ohaus™ Starter ST20M-B Multi-Parameter Pen Meter
Compact design for fast, convenient electrochemistry readings. Measure conductivity, pH, temperature and TDS with the same meter. IP67, automatic temperature compensation, 3-point calibration and auto-off after 6 minutes of non-use.
Thermo Scientific™ Orion™ Star A329 pH, ISE, Conductivity, Dissolved Oxygen, RDO and Temperature Portable Waterproof Multiparameter Meter Kit - PROMO
Get laboratory accuracy everywhere you need it with advanced meter features in this portable, IP67 waterproof meter.
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.
Fisherbrand™ accumet™ AP125 Portable pH/Ion/mV/Temperature Meter
Accurate measurements any time, anywhere
Accuracy (mV) | 0 to ±2000mV |
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Warranty | 3 Years |
Resolution (pH) | Adjustable |
Measurement Modes | pH,Ion,mV,Temperature |
Range (pH) | 2 to 20 |
Range | -2 to +20pH |
For Use With (Application) | pH, Ion concentration, mV, Temperature |
Includes | Meter, 9V battery, manual |
Calibration Points | 10 |
Accuracy | Multiple |
Display Type | LCD |
Product Type | Meter Only |
IP Rating | IP67 |
Temperature Range (English) | 23°F to 212°F |
Data Points | 200 |
Temperature Range (Metric) | -5°C to +100°C |
Range (mV) | 0 to ±2000 mV |
Resolution | Multiple |
YSI™ Professional Series DO, ODO and DO/Conductivity Meters
Compact, handheld instruments provide user-selectable cable lengths and probe options.
Fisherbrand™ accumet™ AP125 Portable pH/Ion/mV/Temperature Meter Kit
Accurate measurements any time, anywhere
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.
Salinity Measurement Modes | Natural Seawater (ppt), Practical Salinity Units (PSU), or % NaCl |
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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 |
Thermo Scientific™ Orion Star™ A321 pH Portable Meter
Accurately monitor pH, mV, ORP and temperature with our waterproof, portable pH meter for high performance in challenging field locations.
Memory | Non-volatile memory preserves data log, calibration log and meter settings |
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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 |
Range (pH) | -2 to 20 |
Channels | 1 |
Accuracy (pH) | ±0.002 |
Power Supply | 4 AA batteries (included) or universal AC adapter (sold separately) |
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 |
Temperature Probe Calibration | 1 point temperature offset calibration |
Certifications/Compliance | CE, TUV 3-1, FCC Class A |
Inputs | BNC (pH or ORP electrode), pin-tip (reference electrode), 8 pin MiniDIN (ATC temperature probe) |
Weight (Metric) | 0.5 kg |
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 |
Temperature (English) Operating | 41°F to 113°F (ambient) |
Isopotential Point | 7.000pH |
AC Adapter | Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003) |
Log Function Type | Automatic data logging with Auto-Read and Timed measure modes; manual data logging with Continuous m |
Calibration | pH with calibration editing option, relative mV (RmV), ORP and temperature |
Battery Type | 4 x AA |
Relative Humidity Range | 5 to 85%, non-condensing |
Calibration Points | 1 to 5 |
Alarm Output | High/low limit alarm, calibration due alarm |
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 |
IP Rating | IP67 |
Keypad | Comprehensive with menu-specific function keys and dual purpose scroll/shortcut keys |
Model | Orion Star A321 pH/mV/RmV/ORP/Temperature Portable Meter |
Outputs | USB, RS-232 |
Temperature Range (English) | 22.0°F to 221.0° F |
Range (Relative mV) | ±2000.0 mV |
Backlight Option | Yes (Selectable) |
Weight (English) | 1.2 lb. |
Temperature (Metric) Operating | 5°C to 45°C (ambient) |
Temperature Range (Metric) | -5.0°C to +105.0°C |
Range (mV) | ±2000.0 mV |
Range (ORP) | ±2000.0 mV |
Methods | 10 per channel with password protection |
Temperature Resolution | 0.1°C, 0.1°F |
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.
Thermo Scientific™ Orion Star™ A325 pH/Conductivity Portable Multiparameter Meter
Accurately measure pH, conductivity and temperature with our pH/conductivity portable meter for high performance in challenging field tests.
Salinity Measurement Modes | Practical salinity (psu) or natural sea water (ppt) |
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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 and Chinese; Portuguese and Korean available with software update |
Measurement Modes | pH,mV,Relative mV,TDS,ORP with Temperature,Salinity,Conductivity,Resistivity with Temperature |
Power Supply | 4 AA batteries (included) or universal AC adapter (sold separately) |
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 |
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 |
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 and Timed measure modes; manual data logging with Continuous m |
Battery Type | 4 AA (included) |
Relative Humidity Range | 5 to 85 %, non-condensing |
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 |
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) |
Range (mV) | ±2000.0 mV |
Range (ORP) | ±2000.0 mV |
Methods | 10 per channel with password protection |
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 | 2 |
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 (conductivity sensor with built-in temperature or ATC temperature probe) |
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 (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, relative mV (RmV), ORP, conductivity with calibration editing op |
Calibration Points | 1 point relative mV (RmV) mode, 1 point ORP mode |
Alarm Output | High/low limit alarm, calibration due alarm |
IP Rating | IP67 |
Model | Orion Star A325 pH/mV/RmV/ORP/Conductivity/TDS/Salinity/Resistivity/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 |
Temperature Resolution | 0.1°C, 0.1°F |
OHAUS™ Aquasearcher™ Multi-Parameter Analyzer AB33M1
The Aquasearcher™ Multi-Parameter Analyzer AB33M1 is easy-to-use and accurate, capable of measuring up to seven parameters including pH, ORP, conductivity, TDS, salinity, resistivity, and temperature.
Range (Resistivity) | 2 to 100 MΩ-cm |
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Range (Conductivity) | 0.01 μS/cm to 500 mS/cm |
Resolution (pH) | 0.1/0.01 pH |
Range (TDS) | 0.1 mg/L to 199.9 g/L |
Measurement Modes | Auto-stop,Continuous |
Range (pH) | -2 to 20 |
Resolution (ISE) | 0.01 pH |
Channels | pH, Conductivity |
Range (Salinity) | 0 to 100 psu |
Display Type | LCD |
IP Rating | None |
Outputs | RS232, USB Device (Included) |
Temperature Range (Metric) | -5°C to +110°C |
Range (mV) | -2000 to 2000 mV |
Thermo Scientific™ Orion Star™ A326 pH/Dissolved Oxygen Portable Multiparameter Meter
Accurately measure pH, dissolved oxygen and temperature with our pH/DO/RDO portable meter for high performance in challenging field tests.
Resolution (Polarographic DO) | 0.01, 0.1mg/L |
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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 |
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.

Accuracy (mV) | ±0.2 mV |
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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 |
Thermo Scientific™ Orion™ Pro Star PD216 pH/ion and DO Bench Meter
Designed to provide accurate and reliable pH, ORP, ion concentration, dissolved oxygen, barometric pressure and temperature analysis, the Thermo Scientific™ Orion™ Pro Star PD216 bench meter is well suited for laboratories that desire a modern meter with advance performance.
Resolution (Polarographic DO) | 0.1, 1% saturation; 0.01, 0.1 mg/L or ppm |
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Pressure Range | 400.0 to 850.0 mmHg; 0.533 to 1.133 bar |
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),Dissolved Oxygen (mg/L),Dissolved Oxygen (% Saturation),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 |
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 |
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. |
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 (20 total) |
Range (pH) | -2 to 20 |
Channels | 2 |
Accuracy (pH) | ±0.002 pH |
Range (ISE) | 0.0001 to 19999 |
Resolution (RDO) | 0.1, 1% saturation; 0.01, 0.1 mg/L or ppm |
Percent Saturation Resolution (RDO) | 0.1, 1% saturation |
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: 9-pin MiniDIN for dissolved oxygen with ATC |
Weight (Metric) | 1.00 kg |
Resolution (ORP) | 0.1 mV |
Accuracy (DO) | ±2% saturation; ±0.02 mg/L or ppm |
Isopotential Point | 7.000 pH; 1.000 ion concentration |
Accuracy (Polarographic DO) | ±2% saturation; ±0.02 mg/L or ppm |
AC Adapter | Universal 100-240 V 50/60 Hz power supply with wall plugs for US/Japan, Euro, UK/Singapore, Australia/New Zealand and China outlets |
Calibration | pH, ORP, Ion Concentration, 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 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 |
Mettler Toledo™ pH/Conductivity Meter SevenDirect SD23
Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
The SevenDirect SD23 is an accurate and flexible benchtop meter for the determination of pH and conductivity - either separately or simultaneously. The instrument is the replacement of the SevenCompact and is delivered with an EasyPlace sensor arm.
Accuracy (mV) | 0.1 mV |
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Temperature Accuracy | ±0.1°C between 0°C and 100°C |
Memory | 2000 Standard Measurements |
Range (Conductivity) | 0.001 μS/cm to 2000 mS/cm |
Resolution (pH) | 0.1, 0.01, 0.001 |
Channels | 2 |
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 |
Accuracy (Conductivity) | 0.5 % |
Resolution (mV) | 1, 0.1 mV |
Temperature Range (English) | -22°F to +266°F |
Weight (English) | 1.9 lb. |
Temperature Range (Metric) | -30°C to +130°C |
Range (mV) | -2000 to 2000 mV |
Weight (Metric) | 850 g |
Temperature Resolution | 0.1°C |
Resolution (ORP) | 1, 0.1 |