pH and Electrochemistry
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.
Jenway™ Glass Bodied Conductivity Probe
Used in conjunction with Jenway™ Conductivity meters - 4510, 4520 and 3540. Jenway™ Glass Bodied Conductivity Probes are designed for general purpose conductivity, pure water, and low conductivity solutions.
Type | Conductivity Cell |
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Temperature (Metric) Range | 0°C to 100°C |
Length (Metric) Cable | 1 m |
Length (Metric) | 120 mm |
For Use With (Equipment) | 4510, 4210, and 3540 Conductimeters |
Material | Glass Body, Platinum Plate |
Probe | Conductivity |
Diameter (Metric) Body | 12 mm |
Mettler Toledo™ FiveEasy™ F20 pH/mV Meters
Compact, benchtop meter provides high quality pH/mV measurements with simple click of a button
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 |
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.
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 |
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.
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 |
METTLER TOLEDO™ Micro pH Electrodes
pH electrodes designed for small sample volumes or for measuring in small containers.
Response Time | <20 sec. |
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Mettler Toledo™ Mettler Toledo™ Micro pH Electrode: LE422
Designed for measuring in small or narrow neck vessels or test tubes
METTLER TOLEDO™ InLab™ Routine pH Electrodes
A combination pH electrode with an integrated temperature sensor and chemically resistant HA glass body. It is designed for general lab applications and ideal for use at high pH values (IP67 rated).
Temperature (Metric) Range | 0°C to 100°C |
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pH Range | 0 to 14 |
Membrane | HA Glass |
Material | Glass |
Junction | Ceramic |
Temperature (Metric) Operating | 0°C to 100°C |
WTW™ WTW™ ProfiLine™ pH Portable Meters
Obtain optimum results with this easy and robust portable pH/mV meter with an automatic autoread function for routine pH measurements that is safe, secure, reliable, and prevents errors.
Height (Metric) | 180 mm |
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Accuracy (mV) | ±0.3, ±1 |
Warranty | 3 Years |
Resolution (pH) | ±0.005 |
Range (pH) | -2 to 19.999 |
For Use With (Application) | Ideal for all seeking an easy, robust and waterproof instrument for portable pH measuring |
Width (Metric) | 80 mm |
Battery Type | AA, NiMH |
Accuracy (pH) | ±0.1, ±0.01, ±0.005 |
Power Supply | 4 x 1.5V AA or 4 x 1.2V NiMH rechargeable |
Calibration Points | 1, 2 or 3 Calibration WTW Technical Buffer, DIN/NIST buffers |
Type | Portable pH meter |
Battery Life | 2500 hr. |
Dimensions (L x W x H) | 80 W x 180 H mm |
Display Type | LCD, 7 Segment |
IP Rating | IP-67 |
Depth (Metric) | 55 mm |
Resolution (mV) | ±0.3, ±1mV |
Certifications/Compliance | CE |
Temperature (Metric) Operating | -5°C to +105°C |
Range (mV) | -1200 to 1200, -2000 to 2000 |
Accuracy (Temperature) | ±0.1°C |
Dimensions (L x W) | 80 W mm |
Resolution | All values ±1 digit |
Weight (Metric) | 0.6 kg |
WTW™ ProfiLine™ Portable Conductivity Meters
Obtain optimum results automatically measuring and evaluating data with this combination of robust conductivity pocket meter and data logger.
Memory | Manual 200/5000 automatic |
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Cell Constant | Fixed: 0.475cm–1/cm–1, Calibratable: 0.450 to 0.500cm–1/0.585to 715cm–1/0.800 to 1.200cm–1 |
For Use With (Application) | For professional field measurements requiring documentation and data transfer |
Width (Metric) | 17.7 cm |
Power Supply | 4 x 1.5V AA or 4 x 1.2V NiMH rechargeable batteries, or via USB |
Range (Salinity) | 0 to 70 ppt |
Battery Life | Up to 1000 hr. |
Temperature Compensation | Automatic |
Display Type | LCD |
Accuracy (Salinity) | ±0.2% Full-scale |
Resolution (Salinity) | 0.1 ppt |
Accuracy (Conductivity) | ±0.5% Full-scale ±1 LSD |
Data Points | 5000 |
Certifications/Compliance | cETLus, CE |
Accuracy (Temperature) | ±0.1°C |
Weight (Metric) | 0.6 kg |
Height (Metric) | 7.9 cm |
Warranty | 3 Years |
Resolution (Conductivity) | 0.01, 0.1 mS |
Range (Conductivity) | 0 μS to 1000 mS |
Sensor Types | DIN/4 mm Banana |
Range (TDS) | 0 to 200 ppt |
Resolution (TDS) | 0.01, 0.1 ppt |
Battery Type | 4 x 1.5V AA or 4 x 1.2V NiMH |
Calibration Points | 1 |
Type | Portable Conductivity Meter |
Accuracy (TDS) | ±0.5% Full-scale |
IP Rating | IP67 |
Depth (Metric) | 5.7 cm |
Model | Cond 3310 |
Resolution (Temperature) | 0.1 |
Temperature (Metric) Operating | -5°C to +105°C |
Hanna Instruments™ Checker™ pH Tester and Replacement Part
For use with virtually any electrode that shares same connector.
WTW™ ProfiLine™ pH/Cond 3320 Universal Multi-parameter Portable Meter Set 2
Monitor process applications in chemistry, food and beverage, Life Science and pharmaceutical industries. WTW™ ProfiLine™ pH/Cond 3320 Universal Multi-parameter Portable Meter features a backlit graphic display for the parallel display of the measured values.
WTW™ ProfiLine™ pH 3310 Portable pH Meter
Portable, waterproof and robust meters for the determination of the parameters pH, ORP, dissolved oxygen, conductivity and BSB
Memory | Manual 500/5000 automatic |
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Resolution (pH) | ±0.005 |
Range (pH) | -2 to 19.999 |
For Use With (Application) | For professional field measurements requiring documentation and data transfer |
Width (Metric) | 80 mm |
Accuracy (pH) | ±0.1, ±0.01, ±0.005 |
Power Supply | 4 x 1.5V AA or 4 x 1.2V NiMH rechargeable |
Battery Life | 1000 hr. |
Display Type | LCD |
Resolution (mV) | ±0.3, ±1mV |
Certifications/Compliance | CE |
Accuracy (Temperature) | ±0.1°C |
Weight (Metric) | 300 g |
Height (Metric) | 180 mm |
Accuracy (mV) | ±0.3, ±1 |
Warranty | 3 Years |
Battery Type | AA, NiMH |
Calibration Points | 1, 2, 3, 4, 5 Calibration WTW Technical Buffer, DIN/NIST buffers plus 20 additional buffer set |
Type | Portable pH meter |
Dimensions (L x W x H) | 80 W x 180 H mm |
IP Rating | IP-66/67 |
Depth (Metric) | 55 mm |
Temperature (Metric) Operating | -5°C to +105°C |
Range (mV) | -1200 to 1200, -2500 to 2500 |
Dimensions (L x W) | 80 W mm |
Resolution | All values ±1 digit |
METTLER TOLEDO™ InLab™ 413/IP67 pH Electrode
A durable, plastic body pH electrode ideal for a wide range of applications that is able to withstand wet and demanding environments (IP67 rated).
WTW™ ProfiLine™ Portable Conductivity Meters
Obtain optimum measurements in natural waters and wastewater with this reliable conductivity portable meter.
Height (Metric) | 7.9 cm |
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Warranty | 3 Years |
Resolution (Conductivity) | 0.001, 0.01, 0.1 mS |
Range (Conductivity) | 0 μS to 1000 mS |
Cell Constant | Fixed: 0.475cm–1/1cm–1, Calibratable: 0.450 to 0.500cm–1/0.585 to 715cm–1/0.800 to 1.200cm–1 |
For Use With (Application) | For professional field measurements requiring documentation and data transfer |
Battery Type | NiMH |
Width (Metric) | 17.7 cm |
Power Supply | 4 x 1.5V AA oder 4 x 1.2V NiMH-rechargeable battery |
Range (Salinity) | 0 to 70 ppt |
Calibration Points | 1, 2, 3-point WTW Technical and NIST Buffer |
Type | Portable Conductivity Meter |
Temperature Compensation | Automatic |
Display Type | LCD |
Accuracy (Salinity) | ±0.2% Full-scale |
IP Rating | IP67 |
Resolution (Salinity) | 0.1 ppt |
Depth (Metric) | 5.7 cm |
Accuracy (Conductivity) | ±0.5% Full-scale ±1 LSD |
Model | Cond 3110 |
Certifications/Compliance | CE |
Resolution (Temperature) | 0.1 |
Temperature (Metric) Operating | -5°C to +105°C |
Accuracy (Temperature) | ±0.1°C |
Weight (Metric) | 0.6 kg |
WTW™ Multi-Parameter Meters
Ideal for measuring environmental applications in ground and surface water measurement, aquaculture, and waste water treatment plants.