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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.
Multiparameter Meters (281)
Conductivity Meters (105)
Dissolved Oxygen Meters (50)
Biological Oxygen Demand Meters (44)
ISE Concentration Meters (20)
Chlorine Meters (4)
Inline Electrochemistry Analyzers (3)
Oxidation Reduction Potential Meters (2)

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1 – 15 of 315 results
1

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

Get premium performance and flexibility with our multiparameter benchtop meter with pH/ISE, conductivity and RDO/DO modules to measure up to four channels at once.

Power Rating DC input: 9VDC, 1A
Salinity Measurement Modes Practical salinity (psu) or natural sea water (ppt)
Resolution (Polarographic DO) 0.01, 0.1mg/L
Pressure Range 400 to 850mmHg
Range (Resistivity) 2 ohm to 100.0 meg-ohm
Memory Non-volatile memory preserves data log, calibration log and meter settings
Resolution (pH) 0.1/0.01/0.001
Languages English, Spanish, French, Italian, German, Chinese, Portuguese and Korean
Measurement Modes pH,mV,Relative mV,ORP,Ion Concentration (ISE) with Temperature,TDS,Conductivity,Salinity
Resolution (ISE) 0.0001 minimum, 1 to 4 significant digits (user selectable)
Power Supply Universal AC adapter (included)
Barometric Pressure Correction 400 to 850mmHg, automatic using built-in barometer or manual entry
Data Management Details Transfer single, range or all data points to printer or computer
Display Type Color graphic LCD with user-customizable options
Resolution (mV) 0.1mV
Data Points 2000 with Date and Time Stamp
Calibration Modes Water-saturated air, air-saturated water, manual (Winkler titration), zero point
Temperature Probe Calibration 1 point temperature offset calibration
Certifications/Compliance CE, TUV 3-1, FCC Class A
Salinity Factor 0.0 to 45.0 ppt, automatic correction using conductivity reading or manual entry of sample salinity
Accuracy (mV) ±0.2 mV or ±0.05% of reading whichever is greater
Accuracy (ISE) ±0.2 mV or ±0.05% of reading whichever is greater
Temperature Accuracy ±0.1°C
Stability Selectable fast, medium, slow or Smart Stability setting; Selectable off or Automatic Smart averaging setting
Calibration Points (ISE) 1 to 6
Resolution (Conductivity) 0.001 μS minimum, auto ranging up to 4 significant digits
Range (Conductivity) 0.001 μS/cm to 3000 mS/cm
Log Function Type Automatic data logging with Auto-Read, Timed and Single Shot measure modes; manual data logging with
Percent Saturation Range Polarographic DO 0.0 to 600.0% saturation
Relative Humidity Range 5 to 85%, non-condensing
Range (RDO) 0.00 to 50.00mg/L
Dimensions (L x W x H) 28 x 24 x 10cm (11 x 9.5 x 3.9 in.), modules add ≤ 2cm (0.8 in.) L & H
Accuracy (TDS) 0.5% of reading ±1 digit
Temperature Selection Manual or automatic with ATC temperature probe
Percent Saturation Range (RDO) 0.0 to 500.0% saturation
Keypad Numeric with menu-specific function keys and dual purpose scroll/shortcut keys
Outputs USB (2), RS232
Temperature Range (English) 22.0°F to 221.0° F
Range (Relative mV) ±2000.0 mV
Calibration Points (pH) 1 to 6
Backlight Option Yes
Percent Saturation Relative Accuracy (RDO) ±2% saturation ≤ 200% saturation, ±10% saturation > 200% saturation
Range (Polarographic DO) 0.00 to 90.00mg/L
Range (mV) ±2000.0 mV
Accuracy (Barometer) ±6 mmHg
Range (ORP) ±2000.0 mV
Pressure Resolution 0.1mmHg
Cell Constant 0.001 to 199.9cm-1
Temperature (Metric) Reference 5°, 10°, 15°, 20°, 25°C
Range (pH) -2 to 20
TDS Factor Range Linear (0.02 to 9.99)
Channels 4 (Customizable with modules)
Accuracy (pH) ±0.002
Range (ISE) 0.0001 to 19990 with selectable units of ppm, Molar, mg/L, %, ppb or none
Range (Salinity) 0.06 to 80.00 psu, 0.05 to 42.00 ppt
Resolution (RDO) 0.01, 0.1mg/L
Temperature Compensation Linear, nLFn (non-linear ultra pure water), nLFu (non-linear ultra pure degassed water), EP (off with warning) or off
Accuracy (Salinity) 0.5% of reading ±1 digit
Resolution (Salinity) 0.01 psu or 0.01 ppt minimum, auto ranging
Percent Saturation Resolution (RDO) 0.1, 1% saturation
Accuracy (Conductivity) 0.5% of reading ±1 digit > 3 μS; 0.5% of reading ±0.01 μS ≤ 3 μS
Weight (Metric) 1.2 kg, modules add 0.2 kg each
Calibration Points (Conductivity) Up to 6
Temperature (English) Operating 41°F to 113°F (ambient)
Resolution (Resistivity) 1 ohm or 0.1 meg-ohm, auto ranging
Isopotential Point 7.000pH (adjustable), 1.000 ISE (adjustable)
Accuracy (Polarographic DO) ±0.2 mg/L or ±2% of reading, whichever is greater
Accuracy (Resistivity) 0.5% of reading ±1 digit
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (Cat. No. STARA-PWR)
Range (TDS) 0.001 ppm to 200.0 ppt
Resolution (TDS) 0.001 ppm minimum, auto ranging up to 4 significant digits
Calibration pH with calibration editing option, ion concentration (ISE) with calibration editing option, relativ
Calibration Points 1 point relative mV (RmV) mode, 1 point ORP mode
Alarm Output Set point alarm, high/low limit alarm, calibration due alarm
IP Rating IP54
Percent Saturation Resolution (Polarographic DO) 0.1, 1% saturation
Weight (English) 2.5 lb., modules add 0.5 lb. each
Temperature (Metric) Operating 5°C to 45°C (ambient)
Temperature Range (Metric) -5.0°C to +105.0°C
Percent Saturation Range (Polarographic DO) 0.0 to 600.0% saturation
Temperature Resolution 0.1°C, 0.1°F
Accuracy (RDO) ±0.1 mg/L up to 8 mg/L, ±0.2 mg/L from 8 to 20 mg/L, ±10% of reading up to 50 mg/L
2

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

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

3

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.

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
4
Promotions Available

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.

5

Thermo Scientific™ Eutech™ PD 450 Meter

Collecting multi-parameter data is a breeze using Eutech™ PD 450 Meter.

Resolution (Polarographic DO) 0.10 %; 0.1 ppm/mg/L
Memory Stores up to 500 data sets
Resolution (pH) 0.01
Measurement Modes pH,mV,Dissolved Oxygen,Temperature
Range (pH) -2 to 16
Accuracy (pH) ±0.01
Includes Time and date stamp on calibration and stored data
Temperature Compensation Automatic or manual from -10 to 110 °C
Battery Life 100+ hr. (without backlight)
Display Type Backlit Custom LCD
Compensation Pressure & Salinity Compensation: manual
Resolution (mV) 0.1 mV ±999.9 mV; 1 mV beyond
Weight (Metric) Meter: 0.5 kg, Boxed: 0.7 kg
Accuracy (mV) ±0.2 mV +2 LSD or +0.5 % of reading; whichever is greater
Temperature Accuracy ±0.5°C, ±0.9°F
Accuracy (DO) ±2 %; ±0.1 ppm or mg/L up to 8; ±0.2 ppm or mg/L above 8
AC Adapter Optional
Calibration mV: ±200 mV, DO: Zero and saturation, Temp: Offset in 0.1 increments, ±10 °C or &
Battery Type 2 AA (included)
Dimensions (L x W x H) Meter: 7 7/8in x 3 1/8in x 2 1/4in (20 x 8.3 x 5.7 cm), Boxed: 9 1/8in x 9 1/8in x 2 3/4in (23 x 23 x 7 cm)
IP Rating IP67
Outputs USB or RS232
Temperature Range (English) 14.0°F to 230.0°F
Calibration Points (pH) Up to 6 points: USA, NIST, DIN or custom
Weight (English) Meter: 1 lb , Boxed: 1.4 lb
Range (Polarographic DO) 0 to 200 %; 0 to 20 ppm/mg/L
Temperature Range (Metric) -10.0°C to +110.0°C
Range (mV) ±2000 mV
Temperature Resolution 0.1 ºC/ºF
6

Thermo Scientific™ Eutech™ PD450 Meter Kit ECPDWP45004K

Collecting multi-parameter data is a breeze using Eutech™ PD450 Meter Kit ECPDWP45004K.

7

Thermo Scientific™ Eutech™ PD 650 Meter

Collecting multi-parameter data is a breeze using Eutech™ PD 650 Meter.

8
Promotions Available

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.

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
10

Thermo Scientific™ Elite PCTS pH / Conductivity / TDS / Salinity Pocket Testers and Replacement Sensors

Flexible on-the-go pH, conductivity, TDS, salinity and temperature testing using durable Elite PCTS pocket testers for a variety of applications including agriculture, aquaculture, hydroponics and more!

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
Resolution (pH) 0.01
Range (TDS) 0.00 to 10.00 ppt
Measurement Modes pH,Conductivity,TDS,Salinity,Temperature
Resolution (TDS) 0.1 ppm for 0.0 to 100.0 ppm; 1 ppm for 100 to 1000 ppm; 0.01 ppt for 0.10 to 10.00 ppt
Range (pH) -1.00 to 15.00
TDS Factor Range 0.40 to 1.00 (selectable)
Accuracy (pH) ±0.02
Relative Humidity Range 5 to 85 %, non-condensing
Range (Salinity) 0.00 to 10.00 ppt
Temperature Compensation Yes
Accuracy (TDS) ± 1% full scale
Accuracy (Salinity) ± 1% full scale
Resolution (Salinity) 0.10 ppt
Accuracy (Conductivity) ± 1% full scale
Temperature Range (English) 32.0°F to 140.0°F
Calibration Points (pH) 1 to 3
Calibration Modes pH, conductivity, TDS, salinity, temperature
Temperature Probe Calibration 1 point
Temperature (Metric) Operating 5°C to 45°C (ambient)
Temperature Resolution 0.1°C, 0.1°F
Calibration Points (Conductivity) 1 to 3
11

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
12
Promotions Available

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

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

Salinity Measurement Modes Natural Seawater (ppt), Practical Salinity Units (PSU), or % NaCl
Range (Resistivity) 1.0 Ω to 100.0 MΩ
Memory Non-volatile
Advanced ISE Functions Single known addition, single known subtraction, double known addition, double known subtraction, analyte addition and analyte subtraction
Resolution (pH) 0.1, 0.01 or 0.001 pH
Languages Chinese, English, French, German, Italian, Japanese, Korean, Portuguese, Spanish
Resolution (ISE) 0.0001 minimum, 1 to 5 digits
Display Type 7-in. High-resolution Color Graphic LCD
Resolution (mV) 0.1 mV
Resolution (Ion) 0.0001 minimum, 1 to 5 digits
Data Points 10,000 with Date and Time Stamp
Temperature Probe Calibration 1 or 2 point temperature offset calibration
Certifications/Compliance CE, TUV 3-1, FCC Class A
Accuracy (mV) ±0.2 mV or ±0.05% of the reading, whichever is greater
Accuracy (ISE) ±0.2 mV or ±0.05% of the reading, whichever is greater
Warranty 2 year meter warranty
Temperature Accuracy ±0.3°C, ±0.5°F
Calibration Points (ISE) Up to 5
Resolution (Conductivity) 0.001 μS/cm minimum, auto-ranging, up to 4 digits
Range (Conductivity) 0.010 μS/cm to 3000 mS/cm
Log Function Type Automatic with Auto-Read and Timed Read Modes, Manual with Continuous Read Mode
Dimensions (L x W x H) 218.9 x 153.2 x 91.33 mm; 8.62 x 6.03 x 3.60 in.
Accuracy (TDS) ±0.5% reading
Temperature Selection Automatic with ATC temperature sensor, ambient or manual
Keypad Capacitive touchscreen user interface
Outputs USB flash drive, computer or printer (STARA-106)
Temperature Range (English) -22.0°F to +266.0°F
Range (Relative mV) -2000 to 2000 mV
Calibration Points (pH) 1 to 5 points
Backlight Option Yes
Range (mV) -2000 to 2000 mV
Range (ORP) -2000 to 2000 mV
Methods 10 per channel (20 total)
Cell Constant 0.100 cm-1, 0.475 cm-1, 0.550 cm-1, 1.000 cm-1, 10.00 cm-1 or user-defined from 0.001 to 199.9 cm-1
Temperature (Metric) Reference 5, 10, 15, 20, 25 or 30°C
Range (pH) -2 to 20
TDS Factor Range Linear (0.01 to 10.00), ISO/EN 27888, 442, NaCl
Channels 2
Accuracy (pH) ±0.002 pH
Range (ISE) 0.0001 to 19999
Range (Salinity) 0.010 to 80.00 ppt; 0.01 to 42.00 PSU; or 0.01 to 400.0% NaCl
Temperature Compensation Linear (0.00 to 10.00 %/°C), nLFn (non-linear natural water), nLFu (non-linear ultra-pure water), EP/USP or off
Accuracy (Salinity) ±0.5% reading
Resolution (Salinity) 0.001 ppt minimum; 0.01 PSU minimum; or 0.01% NaCl minimum, auto-ranging
Accuracy (Conductivity) ±0.5% reading
Inputs Channel 1: BNC for pH, ORP or ISE, 8-pin MiniDIN for ATC, pin-tip for reference; Channel 2: 8-pin MiniDIN for conductivity with ATC
Weight (Metric) 1.00 kg
Resolution (ORP) 0.1 mV
Calibration Points (Conductivity) 1 to 5 points
Resolution (Resistivity) 0.1 Ω minimum, auto-ranging
Isopotential Point 7.000 pH; 1.000 ion concentration
Accuracy (Resistivity) ±0.5% reading
AC Adapter Universal 100-240 V 50/60 Hz power supply with wall plugs for US/Japan, Euro, UK/Singapore, Australia/New Zealand and China outlets
Range (TDS) 0.010 ppm to 500.0 ppt (TDS factor of 1.00); or 0.010 mg/L to 500.0 g/L (TDS factor of 1.00)
Resolution (TDS) 0.001 ppm or mg/L minimum, auto-ranging, up to 4 digits
Calibration pH, ORP, Ion Concentration, Conductivity, TDS, Salinity, Temperature
Accuracy (ORP) ±0.2 mV or ±0.05% of the reading, whichever is greater
Calibration Points 1 to 5 (pH), 1 (ORP), 1 to 5 (ion), 1 to 5 (conductivity), 1 to 5 (TDS), 1 (salinity), 1 to 2 (temperature)
Alarm Output Calibration reminder alarm, high and low limit alarm per parameter
IP Rating IP54
Weight (English) 2.20 lbs.
Range (Ion) 0.0001 to 19999
Temperature Range (Metric) -30.0°C to +130.0°C
Temperature Resolution 0.1°C, 0.1°F
13
Promotions Available

Mettler Toledo™ pH/Conductivity Meter SevenDirect SD23
GREENER_CHOICE

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
14

Thermo Scientific™ Orion Star™ A221 Portable pH Meter
BIOPHARMA

Reliably measure pH, mV, ORP and temperature with our portable pH meter for advanced field analysis and printer or computer interfacing.

15

Thermo Scientific™ Orion Star™ A324 pH/ISE Portable Multiparameter Meter
BIOPHARMA

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