Portable pH Meters

Instruments used to measure the acidity or alkalinity of a sample, and designed for portability and durability.

Portable pH meters are most often used away from the physical lab to measure the acidity or alkalinity of liquids in more remote locations.

A pH meter actually measures hydrogen-ion activity in water-based solutions. The liquid’s acidity or alkalinity is expressed as a pH unit. The pH scale ranges from 0 to 14, meaning a liquid with a pH below 7 is acidic and a pH above 7 is basic. A pH of 7 is considered neutral.

Also called electrochemistry meters, pH meters are potentiometric and determine the difference in electrical potential between the measuring electrode and a reference electrode.

Some portable pH meters accomplish routine tasks, often used to determine the pH of swimming pools and meet other commercial needs. These are sometimes called pH testers. Indicators or litmus papers can also be used to qualitatively measure pH.

Modern portable pH meters are typically digital and may detect more than pH. Some are equipped to measure specific ions, dissolved oxygen content, or conductivity.

Many portable pH meters are waterproof to protect against accidental dropping or adverse environmental conditions like rain or snow. Some electrodes are also equipped with longer cables to allow for submersion in a reservoir of water or other liquid.

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Fisherbrand™ pH Pen

pH measurement is easier than ever with the Fisherbrand™ pH Pen™ – an economical range pocket-size tester designed for on-the-go pH measurements.

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Mettler Toledo™ FiveGo™ F2 pH/mV Meters

Portable meter provides reliable and high quality pH/mV measurements with simple click of a button

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Specifications

Accuracy (mV)	±1
Memory	200 measurements, current calibration
Log Function Type	Automatic, Manual
Resolution (pH)	0.01
Measurement Modes	pH
Range (pH)	0 to 14
Calibration	Linear
Calibration Points	3
Temperature Compensation	ATC and MTC
Dimensions (L x W x H)	18.8 x 7.7 x 3.3 cm (97.4 x 3 x 1.3 in.)
Display Type	LCD
Model	F2
Resolution (mV)	1mV
Data Points	200
Backlight Option	None
Weight (English)	0.5 lb.
Resolution (Temperature)	0.1°
Temperature Range (Metric)	0°C to 100°C
Range (mV)	-1999 to 1999
Inputs	BNC, Cinch
Accuracy (Temperature)	±0.5°C
Weight (Metric)	0.26 kg

OHAUS™ Starter pH Pen Meters

Convenient pH testing. OHAUS Starter pH Pen Meters offer a convenient way to measure pH, or the relative acidity or alkalinity of a sample at a given temperature. The pH pen meters can be completely operated with just one hand, freeing up your other hand to handle samples.

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Specifications

Calibration Points	3
Includes	4 1.5V Batteries
Type	Portable pH Meter
Log Function Type	Automatic Data Logging
Data Points	30
Backlight Option	None
Weight (English)	0.24 lb.
Range (pH)	0 to 14
Calibration	Automatic/Manual
For Use With (Application)	Measuring pH, or the relative acidity or alkalinity of a sample at a given temperature
Battery Type	4 x AG13 1.5 V Micro Alkaline
Accuracy (pH)	±0.1
Weight (Metric)	110 g

Fisherbrand™ accumet™ AP115 Portable pH Meter

Accurate measurements any time, anywhere

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Thermo Scientific™ Orion Star™ A121 Portable pH Meter

Take simple pH and temperature measurements with our portable pH meter with easy operation for basic field testing.

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Specifications

Memory	Non-volatile memory preserves log and settings
Resolution (pH)	0.01, 0.1
Languages	English
Measurement Modes	pH,mV,Relative mV with Temperature
Range (pH)	-2 to 16
Channels	1
Accuracy (pH)	±0.01
Power Supply	4 AA batteries (included) or universal AC adapter (sold separately)
Battery Life	2000 hr.
Data Management Details	Internal Data Point Memory
Display Type	LCD
Resolution (mV)	0.1mV
Data Points	50
Certifications/Compliance	CE, TUV 3-1, FCC Class A
Temperature Probe Calibration	1 point temperature offset calibration
Inputs	BNC (pH or ORP electrode), 8 pin MiniDIN (ATC temperature probe)
Accuracy (Temperature)	±0.1°C
Weight (Metric)	0.5 kg
Accuracy (mV)	±0.2 or ±0.05%, whichever is greater
Stability	Smart Stability and Smart Averaging
Warranty	3 Year Meter Warranty
Temperature (English) Operating	41°F to 113°F (ambient)
Isopotential Point	7.00pH
AC Adapter	Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
Log Function Type	Automatic with Auto-Read Measure Mode, Manual with Continuous Measure Mode
Calibration	pH, relative mV (RmV) and temperature
Battery Type	4 x AA
Relative Humidity Range	5 to 85%, non-condensing
Calibration Points	1 to 3
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	IP67
Temperature Selection	Manual or automatic with ATC temperature probe
Keypad	Simple with highlighted measure key, scroll and shortcut keys
Model	Orion Star A121 Portable pH/mV/RmV/Temperature Meter
Outputs	None
Range (Relative mV)	±1999.9mV
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
Range (mV)	±1600.0

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!

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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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Cole-Parmer™ Oakton™ EcoTestr™ pH 1 Waterproof Pocket Tester

Oakton™ EcoTestr™ pH 1 Waterproof Pocket Tester automatically recognizes pH buffer standards

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Calibration Points	3
Type	Portable pH Meter
Log Function Type	Automatic Data Logging
Data Points	30
Backlight Option	None
Weight (English)	0.24 lb.
Range (pH)	0 to 14
Calibration	Automatic/Manual
For Use With (Application)	Measuring pH, or the relative acidity or alkalinity of asample at a given temperature
Battery Type	4 x AG13 1.5V Micro Alkaline
Weight (Metric)	110 g

Oakton™ Waterproof pH 450 Portable Meter

Rugged design with backlit display for use in any environment

Pricing and Availability
Specifications

Width (English)	3.12 in.
Length (Metric)	20 cm
Length (English)	7.87 in.
Resolution (pH)	0.01
Range (pH)	-2 to 16
Accuracy (Ion)	±0.5% full-scale (monovalent); ±1% full-scale (divalent)
For Use With (Application)	Manufacturing floor, field testing and laboratory
Width (Metric)	8 cm
Accuracy (pH)	±0.01
Battery Life	500 hr.
Temperature Compensation	Automatic or Manual
Data Management Details	Manual or Timed Collection
Display Type	LCD, Graphic with Backlight
Resolution (Ion)	0.01
Resolution (mV)	0.1mV ±999.9mV; 1mV beyond
Data Points	500 Sets
Certifications/Compliance	CE
Accuracy (Temperature)	±0.5°C
Height (English)	2.25 in.
Height (Metric)	5.7 cm
Accuracy (mV)	±0.2
AC Adapter	Optional universal AC adapter
Battery Type	2 x AA
Calibration Points	pH: Up to 6 (USA, NIST, DIN); ±200 mV; Up to 6 (Ion); 0.1° increments (temp.)
Dimensions (L x W x H)	20 x 8 x 5.7 cm (7.87 x 3.12 x 2.25 in.)
IP Rating	IP67
Outputs	USB, RS-232
Temperature Range (English)	17°F to 230°F
Range (Ion)	0.0 to 19,999
Resolution (Temperature)	0.1°
Temperature Range (Metric)	-10°C to +110°C
Range (mV)	±2000

Oakton™ Handheld pH Meters

High +/-0.01 pH accuracy at an economical price.

Pricing and Availability
Specifications

Height (Metric)	3.5 cm
Temperature Compensation	Automatic from 0° to 100°C
Battery Life	>70 hr.
Width (English)	2.75 in.
Length (Metric)	14 cm
Temperature (English) Operating	32.0°F to 122.0°F
Resolution (mV)	1mV
Weight (English)	0.9 lb.
Temperature (Metric) Operating	0°C to 50°C
For Use With (Application)	Simple push-button operation, automatic temperature compensation, hold and auto-off functions, built-in stand for benchtop or long-term use
Battery Type	4 x AAA
Weight (Metric)	0.4 kg
Height (English)	1.37 in.

Hanna Instruments™ Checker™ pH Tester and Replacement Part

For use with virtually any electrode that shares same connector.

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Fisherbrand™ accumet™ AP110 Portable pH Meter Kit

Accurate measurements anytime, anywhere.

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Fisherbrand™ accumet™ AP110 Portable pH Meter

Accurate measurements any time, anywhere

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Oakton™ pHTestr™ Waterproof Pocket pH Testers

Oakton™ pHTestr™ Waterproof Pocket pH Testers have large easy-to-read LCD display featuring three-color backlight

Pricing and Availability
Specifications

Height (Metric)	4 cm
Accuracy (mV)	±0.2% full-scale
Warranty	2 Years
Resolution (pH)	0.01
Measurement Modes	pH
Range (pH)	-2 to 16
Calibration	USA, NIST
For Use With (Application)	Water Quality Testing
Width (Metric)	4 cm
Battery Type	4 AAA
Channels	1
Accuracy (pH)	±0.01
Calibration Points	1, 2 or 3
Includes	pH Tester, protective plastic storage case, lanyard, and four AAA batteries.
Type	pH Tester
Battery Life	400 hr.
Temperature Compensation	Automatic
Display Type	LCD
IP Rating	IP67
Backlight Option	Yes
Temperature Range (English)	32°F to 122°F
Certifications/Compliance	CE
Resolution (Temperature)	0.1°F/°C
Temperature Range (Metric)	0°C to 50°C
Accuracy (Temperature)	±0.5°C;/±0.9°F

Portable pH Meters

Portable pH Meters

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