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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Jenway™ 550 portable pH meter supplied in carry case with epoxy combination pH electrode, ATC probe and batteries

550 portable pH meter supplied in carry case with epoxy combination pH electrode, ATC probe and batteries. A small, lightweight general purpose pH meter offering 2 point pH calibration and automatic buffer recognition. Simultaneously displays both the temperature compensated pH readings and temperature.

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Fisherbrand™ accumet™ AET15 pH Tester

Large display screen - dual display LCD for enhanced readability, provides comprehensive meter information

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Fisherbrand™ accumet™ AE6 Portable pH/ORP Meter

The AE6 Portable pH Meters are ideal for quick, accurate conductivity or TDS checks in laboratories, field and schools.

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Specifications

Accuracy (mV)	±1
Resolution (pH)	0.01
Range (pH)	0 to 14
Calibration	1.68, 4.01, 7, 10.01, 12.45
For Use With (Application)	Water Quality Testing
Battery Type	AAA
Accuracy (pH)	±0.01
Calibration Points	1 to 5
Type	Portable Meter
Temperature Compensation	Automatic/Manual (0°C to 100°C)
Resolution (mV)	1 mV
Resolution (Temperature)	0.1°C
Temperature Range (Metric)	0°C to 100°C
Range (mV)	-1000 to +1000 mV
Accuracy (Temperature)	±0.5°C

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™ 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 Node
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	IP-67
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

Hanna Instruments™ Checker™ pH Tester and Replacement Part

For use with virtually any electrode that shares same connector.

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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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Hanna Instruments™ Waterproof Portable pH Meter

Features a large, dual level LCD display for easy viewing of the pH, temperature, and status indicators. Hanna Instruments™ Waterproof Portable pH Meter offers a simplified two-button operation. Compact, waterproof, and portable.

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Oakton™ Waterproof Big Display pHTestr™ 30

Versatile, compact design works in a field or laboratory setting.

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Specifications

Diameter (English)	1.5 in.
Warranty	1 Year
Length (Metric)	16.5 cm
Temperature (English) Operating	32.0°F to 122.0°F
Detection Range	-1 to 15 pH
Resolution (pH)	0.01
Range (pH)	-1 to 15
For Use With (Application)	Hold function, auto-off, error messages, waterproof, dustproof and floatable
Accuracy (pH)	±0.01
Calibration Points	1 to 3
Accuracy	±0.1 pH
Display Type	LCD
IP Rating	IP-67
Diameter (Metric)	3.8 cm
Certifications/Compliance	USA, NIST
Resolution (Temperature)	0.1°C
Temperature (Metric) Operating	0°C to 50°C
Accuracy (Temperature)	±1°C
Resolution	0.1pH

Thermo Scientific™ Eutech™ pH 450 Meter

Eutech™ offers a wide range of pH meters and electrodes that measure pH values in various educational, laboratory and industrial applications.

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Specifications

Memory	Stores up to 500 data sets
Resolution (pH)	0.01
Measurement Modes	500
Range (pH)	-2 to 16
Accuracy (Ion)	±0.5 % full scale (monovalent); ±1 % full scale (divalent)
Accuracy (pH)	±0.01
Includes	Real-Time Clock: Time and date stamp on calibration and stored data
Battery Life	>500 hr. (without backlight)
Temperature Compensation	Automatic/Manual (-10°C to 110°C)
Display Type	LCD, Custom with Backlight
Resolution (Ion)	0.01 / 0.1 / 1 ppm
Resolution (mV)	0.1 mV ±999.9 mV; 1 mV beyond
Data Points	500
Temperature Probe Calibration	Offset in 0.1 increments, ±10 °C or ±18 °F
Accuracy (Temperature)	±0.5°C/±0.9°F
Weight (Metric)	Meter: 0.5 kg, Boxed: 0.7 kg
Accuracy (mV)	±0.2 +2 LSD or +0.5 % of reading, whichever is greater
AC Adapter	Optional
Calibration	mV: ±200 mV, Ion: From 2 to 4 or 2 to 5 points: 0.10, 1.00, 10.0, 100.0 & 1000 / 0.20, 2.00, 20.0
Battery Type	2 x AA batteries (included)
Calibration Points	Up to 5 (USA & NIST & CUSTOM), Up to 6 (DIN)
Dimensions (L x W x H)	Meter: 7 7/8 x 3 1/8 x 2 1/4 in (20 x 8.3 x 5.7 cm), Boxed: 9 1/8 x 9 1/8 x 2 3/4 in (23 x 23 x 7 cm)
IP Rating	IP-67
Outputs	USB, RS-232
Temperature Range (English)	14.0°F to 230.0°F
Range (Ion)	0.0 to 2000 ppm
Weight (English)	Meter: 1 lb., Boxed: 1.4 lb.
Resolution (Temperature)	0.1°C/°F
Temperature Range (Metric)	-10°C to +110°C
Range (mV)	±2000

Hanna Instruments™ Portable Waterproof pH/EC/TDS Meters

Designed to measure pH, conductivity (EC), total dissolved solids (TDS), and temperature with a single probe. Hanna Instruments™ Portable Waterproof pH/EC/TDS Meters are available for high range and low range measurement.

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Fisherbrand™ Waterproof 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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Thermo Scientific™ Eutech™ pH 150 Meter Kit

Eutech™ offers a wide range of pH meters and electrodes that measure pH values in various educational, laboratory and industrial applications.

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Specifications

Memory	Stores up to 150 data sets
Resolution (pH)	0.01
Range (pH)	-2 to 16
Calibration	mV: ±200 mV, Temp: Offset in 0.1 increments, ±10°C or ±18°F
Accuracy (pH)	±0.01
Power Supply	Two AA batteries (included), >700 hours continuous use; AC adapter (optional)
Calibration Points	Up to 5 (USA & NIST), Up to 6 (DIN)
Temperature Compensation	Automatic/Manual (-10°C to 110°C)
Display Type	LCD, 3-Line Custom
Resolution (mV)	0.1 mV ±999.9 mV; 1 mV beyond
Range (Relative mV)	±2000
Data Points	150
Temperature Range (English)	14.0°F to 230.0°F
Resolution (Temperature)	0.1°C/°F
Temperature Range (Metric)	-10°C to +110°C
Accuracy (Temperature)	±0.5°C;/±0.9°F