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pH Meters

The expanded features in today’s pH meters reflect the broad use of this technology.

by Other Author

The expanded features in today’s pH meters reflect the broad use of this technology. Researchers use pH meters in a wide range of research fields—including biological and chemical, agricultural and environmental, and more—and virtually all kinds of manufacturing.

Top 6 Questions You Should Ask When Buying a pH Meter

1. What type of connector does the meter use?

a. Is it a BNC or DIN?

b. Is it proprietary or can other manufacturer’s probes be used with it?

2. What is the replacement cost for a pH electrode?

3. What accessories are included with the meter?

a. What is the complete cost of all accessories needed to operate the meter?

4. What type of after sales support is offered?

a. If something goes wrong with the meter, can it be fixed locally?

b. What is the general turnaround time for repair?

5. What makes the company different from other companies that manufacture similar products?

6. What additional types of features are offered? (GLP data, PC connectivity (USB vs RS 232), calibration timeout, number of calibration points, ISE concentration readout, incremental methods for ISE and mv readout of concentration during calibration process).

Type(s) of pH meter(s) our readers are using or planning to purchase for their labs, based on our latest survey:

  Currently Using Planning to Purchase
Benchtop pH meter 53% 4%
Handheld pH meter 22% 4%
Tester pH meter 3% 2%
In-line pH meter 8% 2%
Other 2% 0%

The methods for measuring pH respondents
use in their labs:

Glass-electrode method 58%
Indicator methods 23%
Metal-electrode methods 9%
Hydrogen-electrode method 8%
Quinhydron-electrode method 1%
Antimony-electrode method 1%
Other 1%

Challenges our readers are currently experiencing
with their pH meter(s):

No issues 28%
Frequent re-calibration 24%
Temperature-dependent 13%
Fragile – constant wearing and breaking of glass electrodes 12%
Unreliable/inaccurate measurement 9%
Maintenance-intensive 6%
Limited field applicability 4%
Other 2%
High labor costs 1%
Battery life 1%

Recently Released pH meters

HI 22091 pH/mV Meter
• Provides a high level of accuracy
• Redesigned HI 2209 (pH/mV Meter), HI 2314 (EC meter), HI 2315 (EC meter), HI 23151 (EC meter with analog output), and HI 2316 (EC and resistivity meter) also recently released
• Includes larger, easy to read LCD, space saving built-in solution holders and an attractive redesigned case

Hanna Instruments

PH-1 Meter Accessory for iPhone & iPod
• Measures pH accurately, presents the data in an easy-to-read format and supports email transmission of critical readings
• Simple to set up and use
• Can be used for environmental testing and monitoring, industrial processes and plants, and the classroom or educational field trips
• Designed for use with the Sensorex Model S200C/BNC or the Sensorex Model S293/30K/BNC/2.5


Mobile pH Meter

• Suitable for use in harsh environments
• Easy to use meter features level IP67 protection, meaning that it is sealed against dust and submersion in water up to 1m
• Also includes include wireless printing and a choice of 1-3 calibration points
• Features memory capable of holding 200 results and an impactresistant carrying case


SevenCompact™ Benchtop Meters
• For measurement of pH, ion concentration, ORP or conductivity
• Comes in pH/Ion S220 and Conductivity S230 models
• Easy to operate; menu guidance is available in 10 different languages
• Two display layouts available

Mettler Toledo


pH Meter Manufacturers

Beckman Coulter
Hanna Instruments
ITT Analytics
Mettler Toledo
Nova Analytics
Pulse Instrument
Thermo Orion