pH and Electrochemistry
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pH and Electrochemistry
Instruments and other methods to measure pH, conductivity, specific ions, dissolved oxygen, and other parameters; may be handheld or benchtop and manual or electronic (analog or digital); includes pH indicator papers, electrodes, and other probes.
pH and electrochemistry meters and related products are used to assess acidity and alkalinity, conductivity, specific ion concentrations, and dissolved oxygen in water, wastewater, and other solutions. Electrochemistry meters may measure a single parameter (like pH) or they may be multiparameter meters, capable of performing a combination of tests (pH plus conductivity, for example).
Electrochemistry meters are used with various probes and electrodes designed for specific purposes or types of solutions. Electrodes with epoxy bodies are useful for testing food, beverages, and other materials where broken glass could be a problem. Other electrodes are made to withstand higher than usual impact; for use with solutions that contain large particulates; and for compatibility with biological buffers.
Electrodes must be carefully stored and maintained for optimal performance. It’s important to select the right storage bottles and electrode filling, cleaning, rinsing, and storage accessories.
Electrochemistry meters also require regular calibration and maintenance. Standard and certified pH buffers as well as conductivity and specific ion standards are available. Other accessories include electrode supports, bulb guards, cables, connectors, and adapters.
Indicator paper and test strips are another simple, portable, and qualitative way to quickly determine pH and other analytes. The paper or strips contain chemical indicators that produce color reactions. A comparison chart (included) helps to interpret the results. Available in various pH ranges, these are sometimes called “litmus” paper.
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Filtered Search Results
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Fisherbrand™ accumet™ Basic AB315 Benchtop Laboratory pH/mV Meter
Ideal for daily pH testing of your routine laboratory samples, the accumet™ Basic AB315 Benchtop Meter provides essential functions needed for common pH measurements without complicated functions, all at a budget-friendly price.
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Memory | Non-volatile |
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Resolution (pH) | 0.01, 0.1 |
Measurement Modes | pH with mV and Temperature,Relative mV with mV and Temperature |
Range (pH) | -2 to 18 |
Channels | 1 Channel |
Accuracy (pH) | ±0.01 |
Temperature Compensation | Automatic, Manual |
Data Management Details | Printed or CSV Format |
Display Type | 5 in. LCD |
Voltage | 100/240 V |
Resolution (mV) | 1 mV, 0.1 RmV |
Data Points | 500 Points |
Inputs | BNC, ATC |
Accuracy (Temperature) | ±0.3°C (±0.5°F) |
Accuracy (mV) | ±0.2 or ±0.05%, Whichever is Greater |
Stability | Indicator Icons |
Warranty | 3 Years |
AC Adapter | Universal Power Adapter |
Log Function Type | Automatic, Manual |
Calibration | pH, Relative mV, Temperature |
Calibration Points | 1 to 5 (pH), 1 (Relative mV), 1 (Temperature) |
IP Rating | IP54 |
Model | AB315 |
Outputs | Port for Computer or Printer |
Frequency | 50/60 Hz |
Range (Relative mV) | ±2000 mV |
Backlight Option | Yes |
Temperature Range (English) | 23°F to 221°F |
Calibration Points (pH) | USA: 2, 4.01, 7, 10.01, 12; NIST: 1.68, 4.01, 6.87, 9.18, 12.46; DIN: 1.09, 3.06, 4.65, 6.79, 9.23, 12.75; FSCI: 1, 3, 6, 8, 10, 13 |
Resolution (Temperature) | 0.1°C (0.1°F) |
Temperature Range (Metric) | -5°C to +105°C |
Range (mV) | ±2000 mV |
Thermo Scientific™ Orion Star™ A211 Benchtop pH Meter
Reliably measure pH, mV, ORP and temperature with our benchtop pH meter for advanced lab analysis and printer or computer interfacing.
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Memory | Non-volatile memory preserves data log, calibration log and meter settings |
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Resolution (pH) | 0.001, 0.01, 0.1 |
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 | Universal AC adapter (included) or 4 AA batteries (sold separately) |
Battery Life | 800 hr. |
Data Management Details | Transfer single, range or all data points to printer or computer |
Display Type | LCD, Graphic with Backlight |
Resolution (mV) | 0.1mV |
Data Points | 2000 with Date and Time Stamp |
Certifications/Compliance | CE, TUV 3-1, FCC Class A |
Temperature Probe Calibration | 1 point temperature offset calibration |
Inputs | BNC (pH or ORP electrode), pin-tip (reference electrode), 8 pin MiniDIN (ATC temperature probe), stirrer input (stirrer probe) |
Accuracy (Temperature) | ±0.1°C |
Weight (Metric) | 0.9 kg |
Accuracy (mV) | ±0.2 or ±0.05%, whichever is greater |
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 (Cat. No. 1010003) |
Log Function Type | Automatic with Auto-Read and Timed Read Modes, Manual with Continuous Read Mode |
Calibration | pH with calibration editing option, relative mV, ORP and temperature |
Battery Type | 4 x AA (sold separately) |
Relative Humidity Range | 5 to 85%, non-condensing |
Calibration Points | 1 to 5 |
Alarm Output | High/low limit alarm, calibration due alarm |
IP Rating | IP-54 |
Temperature Selection | Manual or automatic with ATC temperature probe |
Keypad | Comprehensive with menu-specific function keys and dual purpose scroll/shortcut keys |
Model | Orion Star A211 pH/mV/RmV/ORP/Temperature Benchtop Meter |
Outputs | USB, RS-232 |
Range (Relative mV) | ±2000.0mV |
Backlight Option | Yes, selectable |
Temperature Range (English) | 22.0°F to 221.0°F |
Weight (English) | 2 lb. |
Resolution (Temperature) | 0.1°C, 0.1°F |
Temperature (Metric) Operating | 5°C to 45°C (ambient) |
Temperature Range (Metric) | -5°C to +105°C |
Methods | 10 per channel with password protection |
Range (ORP) | ±2000.0mV |
Mettler Toledo™ FiveEasy™ F20 pH/mV Meters
Compact, benchtop meter provides high quality pH/mV measurements with simple click of a button
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Accuracy (mV) | ±1 |
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Memory | Current calibration |
Resolution (pH) | 0.01 |
Range (pH) | 0 to 14 |
Calibration | Linear |
Accuracy (pH) | ±0.01 |
Temperature Compensation | ATC and MTC |
Dimensions (L x W x H) | 22.7 x 14.7 x 7 cm (9 x 5.7 x 2.7 in.) |
Display Type | LCD |
Voltage | 120/240 V |
Resolution (mV) | 1mV |
Frequency | 50/60 Hz |
Temperature Range (English) | 32°F to 212°F |
Weight (English) | 1.4 lb. |
Resolution (Temperature) | 0.1°C |
Temperature Range (Metric) | 0°C to 100°C |
Range (mV) | 2000 to 2000 |
Inputs | BNC, Cinch, NTC 30kiloOhm sensors |
Accuracy (Temperature) | 0.5°C |
Weight (Metric) | 0.63 kg |
METTLER TOLEDO™ InLab™ Expert pH Electrodes
A combination pH electrode with PEEK plastic shaft for chemical and mechanical durability, and a fixed cable. Designed for use in a variety of applications.
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Diameter (English) | 0.47 in. |
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Length (Metric) | 120 mm |
pH Range | 0 to 14 |
Diameter (Metric) | 12 mm |
Membrane | U Glass |
Filling Solution Type | Xerolyt Polymer |
Material | PEEK |
Temperature (Metric) Operating | 0°C to 100°C |
Internal Reference | ARGENTHAL |
Thermo Scientific™ Orion™ 9810BN Micro pH Electrode
Measure pH as low as 0.5μL samples in gels or micro containers with this small-tipped glass combination electrode for pH measurements in micro volume samples.
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Thermo Scientific™ Orion™ Stainless-Steel Automatic Temperature Compensation (ATC) Probes
Automatically correct pH measurements for variation in electrode slope due to temperature change.
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Temperature (English) Operating | 32°F to 212°F |
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For Use With (Equipment) | Standard pH Meter |
Storage Requirements | Store in air |
Temperature (Metric) Operating | 0°C to 100°C |
Thermo Scientific™ Orion™ Versa Star Pro™ Benchtop Meter Kit with pH and Conductivity Modules PROMO
The Thermo Scientific™ Orion VERSA STAR pH/Conductivity Multiparameter Benchtop Meter is your meter as you need it — for now and later.
Fisherbrand™ Traceable™ Conductivity Meter Pen
Easy-to-use, waterproof conductivity meter designed for routine analysis and quality control. Simply turn on, insert, and simultaneously read result and temperature.
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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.
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Range (Resistivity) | 2 W to 20 MW |
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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 | 100/240V |
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 |
Fisherbrand™ accumet™ AE Series 3-in-1 Single Junction Gel pH/ATC Electrode
Fisherbrand™ accumet™ AE series pH electrodes support the accumet AE150 pH meter for routine pH measurements a budget-friendly price
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Fisherbrand™ Traceable™ Expanded Range Conductivity Meter
Ideal for checking the purity of water from stills, deionizers, and reverse osmosis, testing laboratory glassware rinsing, measuring total dissolved solids, and making solutions.
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Fisherbrand™ Traceable™ pH/ORP/Temperature Meter
Measure critical water quality parameters — without the need to carry multiple units.
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Thermo Scientific™ Orion Star™ A221 Portable pH Meter
Reliably measure pH, mV, ORP and temperature with our portable pH meter for advanced field analysis and printer or computer interfacing.
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Fisherbrand™ accumet™ Gel-Filled Polymer Body Single-Junction pH Combination Electrodes, Mercury-Free
Rugged polymer construction for handheld use with aqueous samples in the classroom or in the field
Type | pH Combination Electrode |
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Warranty | 1 Year |
Temperature (Metric) Range | -5°C to +80°C |
Length (Metric) | 146 mm |
Temperature (English) Operating | 23°F to 176°F |
pH Range | 0 to 14 |
Response Time | <10 sec. |
Length (English) | 5.75 in. |
Filling Solution Type | 4mol/L KCl gel |
Material | Polymer/Polypropylene |
Junction | Single Ceramic |
For Use With (Application) | Ideal for handheld use with aqueous samples |
Internal Reference | Ag/AgCl |