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.

Probes and Electrodes (3,016)

pH and Electrochemistry Meter Accessories (1,435)

pH Paper and other Test Strips (1,406)

Electrochemistry Meters (786)

pH Meters (524)

Benchtop Titrators (165)

Search Within Results

211 – 225 of 6,354 results

211

Thermo Scientific™ Orion™ Surfactant Half Cell Ion Selective Electrode

Conduct end point detection in titrations of anionic or cationic surfactants in a solution with the Thermo Scientific™ Orion™ Surfactant Half-Cell.

Pricing & Availability

212

Thermo Scientific™ Orion Star T900 Series Titrator Accessories

Minimize maintenance downtime with easy to install Orion Star T900 series titrator replacement parts. Orion Star T900 series titrator accessories expand functionality.

Pricing & Availability
Specifications

For Use With (Equipment)	Orion Star T910 pH titrator, Orion Star T920 redox titrator, Orion Star T930 ion titrator, Orion Star T940 all-in-one titrator

213

Thermo Scientific™ Orion™ Chloride Ion Selective Electrodes

Easily and reliably analyze free chloride ions in aqueous solutions. Provides quick, accurate and economical measurements.

Pricing & Availability
Specifications

Type	Combination ISE
For Use With (Equipment)	Chloride electrodes can be used on any ISE meter with a BNC connection The electrodes can also be used on meters with a variety of inputs when an adapter cable is used.

214

Thermo Scientific™ Orion™ ROSS™ Sodium Ion Selective Electrodes

Measure sodium ions in aqueous solution quickly, accurately and economically.

Pricing & Availability
Specifications

Diameter (English) Body	0.47 in
Length (Metric) Cable	1 M
Length (Metric)	120 mm
For Use With (Equipment)	ISE Meter
Temperature (English) Operating	32 to 176°F
Operating Range (Metric)	Saturated to 10-6 M, saturated to 0.02ppm
Length (English)	4.72 in
Length (English) Cable	39.3 in.
Material	Glass
Filling Solution Type	900010 for regular Na+ (> 10-5 M or 0.2 ppm), 900012 for low level Na+ (< 10-5 M or 0.2 ppm)
Temperature (Metric) Operating	0°C to 100°C
Measurement Range	1 x 10-6 M to saturated 0.02 ppm to saturated

215

Thermo Scientific™ Orion™ ROSS Ultra™ Thin Stem Glass Bodied Combination pH Electrode

Top-performance, semi-micro pH electrodes to measure samples as small as 0.2 mL

Pricing & Availability

216

Thermo Scientific™ Orion Star T940 All-in-One Titrator and Kits

Benefit from the integration of our core electrochemistry technology with a state-of-the-art dispensing system to create an automated all-in-one titrator, a modern, simplified automated system designed to help make performing titrations easier, more reliable and more reproducible than manual titrations.

Pricing & Availability
Specifications

Titration Technique	Equivalence point or preset endpoint
Memory	Non-volatile memory preserves data logs and settings
Advanced ISE Functions	Multiple known addition (MKA); automated calibration and calculation of sample concentration by adding aliquots of standard to sample using the burette
Resolution (pH)	0.001, 0.01, 0.1 (user selectable)
Languages	Chinese, English, French, German, Italian, Japanese, Korean, Portuguese and Spanish
Resolution (ISE)	0.0001 minimum, 1 to 4 significant digits (user selectable)
Cycles Per Titration Run	1 to 5 cycles, option to exclude cycle results from average results and RSD calculations
Data Management Details	Data log export as CSV or PDF file, short or long format
Display Type	5.7 in. color capacitive touchscreen, 640 x 480 resolution
Functions Available	Sample titration, titrant standardization, calibration and direct measure
Resolution (mV)	0.1 mV
Data Points	100 data sets each: sample titration, titrant standardization, calibration and direct measure
Temperature Probe Calibration	Optional 1 point offset calibration
Certifications/Compliance	CE, TUV 3-in-1, FCC, EN/EIC61326-1, IEC 61010
Probe Type	pH electrode, redox electrode or ion selective electrode (ISE); reference half-cell electrode; ATC temperature probe; stirrer probe
Accuracy (mV)	±0.2 mV
Accuracy (ISE)	±0.2 mV or ±0.05% of reading, whichever is greater
Titrant Determination	Standardization titration or manual concentration input
Warranty	1 year replacement warranty
Calibration Points (ISE)	1 to 5
Relative Humidity Range	5 to 85%, non-condensing
Dimensions (L x W x H)	10 x 16 x 14 in. (25.4 x 40.6 x 35.6 cm)
Temperature Selection	Manual or automatic
Precision	0.5% RSD, dependent on environment and handling conditions
Outputs	3 USB ports for printer, USB flash drive and computer software connections
Calibration Points (pH)	1 to 5
Backlight Option	Yes, adjustable
Range (mV)	-2000.0 to +2000.0 mV
Methods	Up to 10 methods with optional password protection; import/export methods via USB flash drive
Resolution	Burette drive offers advanced micro-step technology that provides 25,600 micro-steps per motor revolution for smooth and precise burette positioning (over 2 million micro-steps over the full burette stroke range)
Titration Process Control	Routine, quick, careful or user defined
Time and Date	Yes, with nonvolatile battery backup
Updateable Firmware	Yes, using USB flash drive
Range (pH)	-2 to 20
For Use With (Application)	Acid-base titrations, redox titrations, ion concentration titrations
Titration Types	Direct or back titration
Channels	1
Accuracy (pH)	±0.002pH
Range (ISE)	0.0001 to 19990
Titration Setup Wizard	Yes, using Start a New Titration workflow
Stirrer Probe Speeds	5 user selectable speeds (250 to 3700 RPM)
Burette Sizes	10 mL, 20 mL (included) or 50 mL
Burette Functions	Automatic rinse cycles for flushing and discrete dispense volume with continuous option; Exceeds acc
Inputs	BNC (pH, redox or ion selective electrode), pin-tip (reference electrode), 8 pin MiniDIN (ATC temperature probe), stirrer input (stirrer probe)
Accuracy (Temperature)	±0.2 °C
Equivalence Points	1 to 2
Electrical Requirements	100-240V, 50/60 Hz
Temperature (English) Operating	41°F to 104°F
Preset Endpoints	1 to 3
Material	ABS Plastic
Calibration	pH, mV, ion concentration (ISE) and temperature
Calibration Points	1 point relative mV (RmV) mode
Alarm Output	Notifications for Titration Cycle Complete, Maximum Titrant Volume, Data Log Full, Calibration Due, Maintenance Reminder
IP Rating	IP51
Model	Orion Star T940
Sample ID	Auto-incremental, manual or off
Resolution (Temperature)	0.1 °C
Temperature Range (Metric)	-5.0°C to +100.0°C
Temperature (Metric) Operating	5°C to 40°C
Blank Options	Fixed value or variable value using titration

217

Thermo Scientific™ Orion™ Single Junction Refillable Epoxy Bodied Combination pH Electrode

Confidently maneuver and measure in the field or on the plant floor with Orion™ refillable epoxy body electrodes.

Pricing & Availability
Specifications

Diameter (English) Body	0.47 in.
Length (Metric)	120 mm
Temperature (English) Operating	32°F to 194°F
Precision	0.02
pH Range	0 to 14
Diameter (Metric) Cap	16 mm
Length (English)	4.7 in.
Filling Solution Type	4M KCl with Ag/AgCl
Material	Epoxy Body
Junction	Glass Fiber
Diameter (Metric) Body	12 mm
Temperature (Metric) Operating	0°C to 90°C
Internal Reference	Ag/AgCl

218

Thermo Scientific™ Orion™ High Performance Ammonia Combination Ion Selective Electrode

Obtain quick, simple, accurate and economical results at low level ammonia measurements.

Pricing & Availability

219

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Thermo Scientific™ Orion Star™ A321 pH Portable Meter PROMO

Accurately monitor pH, mV, ORP and temperature with our waterproof, portable pH meter for high performance in challenging field locations.

Pricing & Availability

220

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.

Pricing & Availability
Specifications

Salinity Measurement Modes	Practical salinity (psu) or natural sea water (ppt)
Range (Resistivity)	2 ohm to 100.0 meg-ohm
Memory	Non-volatile memory preserves data log, calibration log and meter settings
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

221

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Thermo Scientific™ Orion™ ROSS Ultra™ Refillable Epoxy Bodied pH/ATC Triode™

Accurately measure pH and temperature together in just one electrode, with a built-in temperature sensor.

Pricing & Availability
Specifications

Type	pH/ATC Combination Electrode
Warranty	2 Years
Length (Metric)	120 mm
Precision	0.01
Isopotential Point	7
pH Range	0 to 14
Diameter (Metric)	12 mm
Filling Solution Type	ROSS electrode 3 M KCl fill solution (Cat. No. 810007)
Material	Epoxy Body
Junction	Glass Fiber
pH Relative Accuracy	0.03 pH for buffers using automatic temperature compensation
Temperature (Metric) Operating	0°C to 100°C
Internal Reference	ROSS

222

Thermo Scientific™ Orion Star™ A123 Dissolved Oxygen Portable Meter

Take simple dissolved oxygen and temperature measurements with this portable meter with easy operation for basic field testing.

Pricing & Availability
Specifications

Temperature (Metric) Range	0.0°C to 50.0°C
Resolution (Polarographic DO)	0.01, 0.1mg/L
Pressure Range	450 to 850mmHg (manual entry)
Memory	Non-volatile memory preserves log and settings
Languages	English
Measurement Modes	Dissolved Oxygen (% Saturation),Dissolved Oxygen (mg/L with Temperature)
Channels	1
Power Supply	4 AA batteries (included) or universal AC adapter (sold separately)
Barometric Pressure Correction	450 to 850mmHg, automatic with manual entry
Battery Life	2000 hours
Data Management Details	Internal data point memory
Display Type	LCD
Data Points	50
Calibration Modes	Water-saturated air, manual (Winkler titration)
Percent Saturation Relative Accuracy (Polarographic DO)	±2 % saturation or ±2% of reading whichever is greater
Certifications/Compliance	CE, TUV 3-1, FCC Class A
Temperature Probe Calibration	1 point temperature offset calibration
Inputs	9 pin MiniDIN (polarographic DO sensor with built-in temperature)
Accuracy (Temperature)	±0.1°C
Weight (Metric)	0.5 kg
Salinity Factor	0 to 45 ppt, automatic correction using manual entry of sample salinity
Stability	Smart Stability and Smart Averaging
Warranty	3 Year Meter Warranty
Temperature (English) Operating	41°F to 113°F (ambient)
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)
Sensor Types	Polarographic Dissolved Oxygen Sensor
Percent Saturation Range Polarographic DO	0.0 to 200.0 % saturation
Log Function Type	Automatic with Auto-Read Measure Mode, Manual with Continuous Measure Mode
Battery Type	Four AA (included)
Relative Humidity Range	5 to 85 %, non-condensing
Dimensions (L x W x H)	24 cm x 10 cm x 6.5 cm (9.5 in. x 3.9 in. x 2.6 in.)
IP Rating	IP-67
Temperature Selection	Automatic with ATC temperature probe
Percent Saturation Resolution (Polarographic DO)	0.1, 1 % saturation
Keypad	Simple with highlighted measure key, scroll and shortcut keys
Outputs	None
Weight (English)	2 lb.
Resolution (Temperature)	0.1°C (0.1°F)
Temperature (Metric) Operating	5°C to 45°C (ambient)
Range (Polarographic DO)	0.00 to 20.00 mg/L
Percent Saturation Range (Polarographic DO)	0.0 to 200.0 % saturation