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pH Meters

Instruments used to measure the acidity and alkalinity of water, other liquids, and solutions; the difference in voltage between pH-sensitive glass electrodes and reference electrodes is converted into pH units based on the Nernst equation.
Portable pH Meters (307)
Benchtop pH Meters (174)

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16 – 30 of 398 results
16

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.

18

Oakton™ Waterproof Big Display pHTestr™ 30

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

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
Measurement Modes pH
Range (pH) -1 to 15
Calibration Automatic
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 IP66/67
Diameter (Metric) 3.8 cm
Backlight Option None
Certifications/Compliance NIST
Resolution (Temperature) 0.1°C
Temperature (Metric) Operating 0°C to 50°C
Accuracy (Temperature) ±1°C
Resolution 0.1pH
19

Thermo Scientific™ Elite ORP Pocket Testers and Replacement Sensors

Flexible on-the-go ORP testing using durable Elite ORP pocket testers with replaceable sensors for a variety of applications including hydroponics, food and beverage, environmental and more!

20

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!

21

OHAUS™ Starter Water Analysis Portable pH Meters

LCD meters combine portability with precise pH measurement.

Width (English) 3.5 in.
Resolution (pH) 0.01
Measurement Modes pH with mV and Temperature
Range (pH) 0 to 14
Width (Metric) 9 cm
Accuracy (pH) ±0.01
Battery Life >500 hr.
Data Management Details 30 Sets, most recent calibration data
Display Type LCD
Resolution (mV) 1 mV
Data Points 30
Inputs BNC, NTC
Accuracy (Temperature) ±0.5°C
Height (English) 1.3 in.
Weight (Metric) 0.18 kg
Height (Metric) 3.5 cm
Accuracy (mV) ±1
Log Function Type Automatic Data Logging
Material ABS
Calibration Automatic/Manual
Battery Type AAA
Calibration Points 1 to 3
Type Portable pH Meters
IP Rating IP54
Depth (Metric) 17 cm
Backlight Option None
Resolution (Temperature) 0.1°C
Temperature Range (Metric) 0°C to 100°C
Range (mV) -1999 to 1999
Resolution 0.01 pH; 1 mV; 0.1°C
22

OHAUS™ Aquasearcher™ pH Meter AB33PH

The Aquasearcher™ pH Meter AB33PH is a highly reliable and user-friendly pH benchtop meter with electrode (ST310) for standard laboratory applications. Designed to measure pH and oxidation-reduction potential with temperature measurements.

Accuracy (mV) ±1
Log Function Type 1000 Measurement, Last Calibration
Resolution (pH) 0.01, 0.1
Measurement Modes Auto-stop,Continuous
Range (pH) -2 to 16
Calibration Linear
Accuracy (pH) ±0.01
Calibration Points Up to 3
Data Management Details Datalog with Time and Date Stamp
Display Type LCD, 6.5 in. Segment and Dot Matrix
Outputs USB, RS-232 (PC), RS-232 (Printer)
Data Points 1000 Sets
Backlight Option LCD
Temperature Range (Metric) -5°C to +110°C
Range (mV) ±2000.0
Accuracy (Temperature) ±0.5°C
23

OHAUS™ Aquasearcher™ pH Meter AB41PH

The Aquasearcher™ pH Meter AB41PH is an advanced, research-grade benchtop pH meter with electrode, offering accurate, repeatable results with selectable resolution and an intelligent i-Steward system.

Accuracy (mV) ±0.3
Log Function Type 1000 Measurement, 10 Calibration
Resolution (pH) 0.001, 0.01, 0.1
Measurement Modes Auto-stop,Timed,Continuous
Range (pH) -2 to 20
Calibration Offset
Accuracy (pH) ±0.002
Calibration Points Up to 5
Data Management Details Datalog with Time and Date Stamp
Display Type LCD, 6.5 in. Segment and Dot Matrix
Outputs USB, RS-232 (PC), RS-232 (Printer)
Data Points 1000 Sets
Backlight Option LCD
Temperature Range (Metric) -10°C to +125°C
Range (mV) ±2000.0
Accuracy (Temperature) ±0.3°C
24
Promotions Available

Thermo Scientific™ PH111 pH/mV Bench Meter Easy-to-Clean Bio Kit PROMO

Orion Lab Star PH111 pH bench meters measure pH or ORP with mV and temperature, feature a large backlit display for easy viewability, and offer small footprint to save bench space. The Orion Lab Star pH meter is ideal for simplified, budget-friendly lab testing and data recording.

25

Oakton™ PCTSTestr™ 5 Waterproof Pocket Tester

Oakton™ PCTSTestr™ 5 Waterproof Pocket Tester performs conductivity, pH, salinity, and TDS testing all in one meter

28

Thermo Scientific™ Orion Lab Star PH111 Bench pH Meters PROMO

Orion Lab Star PH111 benchtop pH meters measure pH or ORP with mV and temperature, feature a large backlit display for easy viewability, and offer small footprint to save bench space. The Orion Lab Star pH meter is ideal for simplified, budget-friendly lab testing and data recording.

Memory Non-volatile
Resolution (pH) 0.001, 0.01, 0.1
Measurement Modes pH with mV and Temperature,ORP with mV and Temperature
Range (pH) -2 to 18
Data Management Details Transfer single or all data points to printer or computer
Display Type LCD
Resolution (mV) 0.1 mV
Data Points 500 with Date and Time Stamp
Certifications/Compliance CE
Temperature Probe Calibration 1 point temperature offset calibration
Inputs BNC for pH or ORP, 8-pin MiniDIN for ATC
Accuracy (Temperature) ±0.3°C/±0.5°F
Weight (Metric) 700 g
Accuracy (mV) ±0.2 or ±0.05%, whichever is greater
Warranty 3 Years
AC Adapter Universal 100/240 V 50/60 Hz power supply with twist-and-lock meter connection and interchangeable wall plugs for US/Japan, Euro, UK/Singapore, Australia/New Zealand and China outlets
Log Function Type Automatic with Auto-Read and Timed Read Modes, Manual with Continuous Read Mode
Calibration pH, ORP, Temperature
Calibration Points 1 (ORP)
Alarm Output Calibration reminder alarm
Type pH Meter Kit
Dimensions (L x W x H) 198.3 x 155.2 x 61.7 mm (7.81 x 6.11 x 2.43 in.)
IP Rating IP54
Temperature Selection Manual or automatic with ATC temperature probe
Outputs Computer or printer (STARA-106)
Backlight Option Yes
Temperature Range (English) 23.0°F to 221.0°F
Calibration Points (pH) 1 to 5 points
Weight (English) 1.54 lb.
Resolution (Temperature) 0.1°C, 0.1°F
Temperature Range (Metric) -5.0°C to +105.0°C
Range (mV) ±2000.0
Range (ORP) ±2000.0 mV with ±250 mV offset
29
Promotions Available

Mettler Toledo™ pH Meter SevenDirect SD20
GREENER_CHOICE

The SevenDirect SD20 is an accurate and flexible benchtop meter for the determination of pH and ORP. The instrument is the replacement of the SevenCompact and is delivered with an EasyPlace sensor arm.

Memory 2000 Standard Measurements
Log Function Type Automatic, Manual
Resolution (pH) 0.001, 0.01, 0.1
Range (pH) -2 to 20
Accuracy (pH) 0.002
Calibration Points Up to 5
Dimensions (L x W x H) 195 x 205 x 65 mm
Data Management Details PC, Printer, USB Stick
Display Type Color TFT
IP Rating IP54
Data Points 2000
Backlight Option Yes
Temperature Range (English) -22°F to +266°F
Weight (English) 1.9 lb.
Resolution (Temperature) 0.1°C
Temperature Range (Metric) -30°C to +130°C
Range (mV) -2000 to 2000 mV
Accuracy (Temperature) ±0.1°C between 0°C and 100°C
Weight (Metric) 850 g