
Multiparameter Meters
- (2)
- (11)
- (4)
- (1)
- (3)
- (1)
- (5)
- (17)
- (13)
- (6)
- (1)
- (56)
- (30)
- (1)
- (5)
- (9)
- (1)
- (1)
- (18)
- (1)
- (3)
- (11)
- (2)
- (23)
- (3)
- (8)
- (6)
- (37)
- (4)
- (1)
- (14)
- (1)
- (8)
- (1)
- (6)
- (3)
- (2)
- (8)
- (3)
- (2)
- (1)
- (1)
- (9)
- (93)
- (9)
- (21)
- (1)
- (2)
- (3)
- (8)
- (10)
- (53)
- (3)
- (19)
- (8)
- (4)
- (8)
- (10)
- (20)
- (11)
- (16)
- (31)
- (21)
- (38)
- (9)
- (12)
- (1)
- (34)
- (37)
- (39)
- (65)
- (102)
- (1)
- (7)
- (16)
- (10)
- (2)
- (5)
- (1)
- (11)
- (10)
- (3)
- (62)
- (2)
Filtered Search Results

Thermo Scientific™ Orion™ Star A221 pH, mV, ORP and Temperature Portable Waterproof Meter, pH/mV/ORP/Temperature Portable Meter Kit - PROMO
Make necessary testing easier with the durable and dependable Thermo Scientific™ Orion Star™ A221 pH Portable Meter.
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 |
---|---|
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.
Learn More

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 |
---|---|
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 |
METTLER TOLEDO™ S600 SevenExcellence™ Dissolved Oxygen Benchtop Meter Kit
The S600 meter kit includes a meter, electrode, and accessories to measure disolved oxygen (DO). The meter can be expanded with additional modules to measure pH, conductivity, and ISE. It has an intuitive touchscreen, measurement shortcuts, and can export data to a printer, Excel, or LIMS system.
Thermo Scientific™ Orion Star™ A324 pH/ISE Portable Multiparameter Meter
Accurately monitor pH, ion concentration, mV, ORP and temperature with our pH/ISE portable meter for challenging field testing.
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,ORP,Ion Concentration (ISE) 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) |
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 |
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 |
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.) |
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 |
Range (pH) | -2 to 20 |
Channels | 1 |
Accuracy (pH) | ±0.002 |
Range (ISE) | 0.0001 to 19900 with selectable units of ppm, Molar, mg/L, %, ppb or none |
Inputs | BNC (pH, ORP or ion selective electrode), pin-tip (reference electrode), 8 pin MiniDIN (ATC temperature probe) |
Weight (Metric) | 0.5 kg |
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) |
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 |
Model | Orion Star A324 pH/ISE/mV/RmV/ORP/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 |
Thermo Scientific™ Elite CTS Conductivity / TDS / Salinity Pin-sensor Pocket Testers and Replacement Sensors
Flexible on-the-go conductivity, TDS, salinity and temperature testing using durable Elite CTS pin-sensor pocket testers for a variety of applications including hydroponics, pools, spas and more!
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 | 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 |
TDS Factor Range | 0.40 to 1.00 (selectable) |
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 |
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 |
Thermo Scientific™ 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.
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!
Temperature Accuracy | Manual input |
---|---|
Temperature Range (English) | 32.0°F to 140.0°F |
Resolution (pH) | 0.01 |
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 |
Thermo Scientific™ Orion™ Versa Star Pro™ Benchtop Meter Without Modules
For the ultimate flexibility, combine the Thermo Scientific™ Orion™ Versa Star Pro™ Benchtop Meter Without Modules with up to four measurement modules to build your ideal system.
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!
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.
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 |
Mettler Toledo™ Expansion Module for SevenExcellence™ DO/BOD Meters
For use with SevenExcellence Dissolved Oxygen and DO/BOD Meters.
METTLER TOLEDO™ S900 SevenExcellence™ Dissolved Oxygen/BOD Benchtop Meter
The S900 is a dissolved oxygen(DO)/biological oxygen demand (BOD) meter. It can be expanded with additional modules to measure pH, conductivity, ISE, salinity, TDS, and Redox/ORP. It has an intuitive touchscreen, measurement shortcuts, and can export data to a printer, Excel file, or LIMS system.
Accuracy | ±1 |
---|---|
Display Type | Color TFT |
Accuracy (Concentration) | ±0.1mg/L from 0 to 8; ±0.2mg/L from 8 to 20; ±10% from 20 to 50 |
Percent Saturation Range Polarographic DO | 0 to 500% |
Measurement Modes | Dissolved Oxygen |
Temperature Range (Metric) | 0°C to 50°C |
Range (DO) | 0.000 to 50mg/L (ppm) |
Channels | 3 |
Resolution | 0.001 (display) |
Thermo Scientific™ Elite pH Pocket Testers and Replacement Sensors
Flexible on-the-go pH and temperature testing using durable Elite pocket testers with replaceable sensors for a variety of applications including environmental monitoring, pools, spas and more!
Thermo Scientific™ Elite CTS Conductivity / TDS / Salinity Cup-sensor Pocket Testers and Replacement Sensors
Flexible on-the-go conductivity, TDS, salinity and temperature testing using durable Elite CTS cup-sensor pocket testers for a variety of applications including agriculture, aquariums and more!
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 | 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 |
TDS Factor Range | 0.40 to 1.00 (selectable) |
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 |
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 |