pH Meters for Every Laboratory and Field Application
pH Meter & Sensor

pH Meter

Wide Range of pH and Conductivity Meters for Laboratory and Field Use

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pH meter
pH Meter
pH Meter
pH Meter

Benchtop pH Meter

Portable pH Meter

Analytical Sensors

User-friendly and intuitive single and multi-channel instruments for the highest precision and solid compliance.
Single and dual channel portable pH meters that are robust and ergonomic. Perfectly suited for mobile pH applications in the laboratory, at-line and in the field.
High quality sensors covering a range of applications and measurement parameters including pH, ORP, conductivity, ion concentration and dissolved oxygen.
pH buffers, standards and electrolytes
pH Meter
pH Meter

Laboratory Calibration Solutions

pH Automation & Software

pH Accessories

Calibration, verification and maintenance solutions to ensure high measurement precision and uptime.
Software and Automation solutions for higher productivity, more reliable results and solid compliance.
Peripherals to support your workflow - ergonomic electrode holder, magnetic stirrer, parameter expansion modules, printer, barcode reader and more.
pH Meter

User-friendly and intuitive single and multi-channel instruments for the highest precision and solid compliance.

pH Meter

Single and dual channel portable pH meters that are robust and ergonomic. Perfectly suited for mobile pH applications in the laboratory, at-line and in the field.

pH Meter

High quality sensors covering a range of applications and measurement parameters including pH, ORP, conductivity, ion concentration and dissolved oxygen.

pH buffers, standards and electrolytes

Calibration, verification and maintenance solutions to ensure high measurement precision and uptime.

pH Meter

Software and Automation solutions for higher productivity, more reliable results and solid compliance.

pH Meter

Peripherals to support your workflow - ergonomic electrode holder, magnetic stirrer, parameter expansion modules, printer, barcode reader and more.

Global Contacts for pH Support and Competence

Dedicated pH, conductivity, DO and ISE supportpH Competence and Support Center (pH CSC)
 
You can contact the pH CSC via phone (with local numbers at local rates) or via email.
 
GermanyTel. +49 69 299 936 46(local rate)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
AustriaTel. +43 1 36 027 731 80(local rate)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
SwitzerlandTel. +41 22 567 53 22(local rate)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
UK & Ireland
Tel. +44 207 660 0895(local rate)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
Spain
Tel. +34 913 75 4130(local rate)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
France
Tel. +33 170 480 091(local rate)E-mail:
ph.lab.support@mt.comFax: +41 22 567 53 23
Belgium
Tel. +32 262 003 68(local rate)E-mail:
ph.lab.support@mt.comFax: +41 22 567 53 23
Denmark
Tel. +45 82 33 27 20(local rate)E-mail:
ph.lab.support@mt.comFax: +41 22 567 53 23
Netherlands
Tel. +31 20 721 9115(local rate)E-mail:
ph.lab.support@mt.comFax: +41 22 567 53 23
Norway
Tel. +47 23 50 04 60(local rate)E-mail:
ph.lab.support@mt.comFax: +41 22 567 53 23
Sweden
Tel. +46 85 199 2098(local rate)E-mail:
ph.lab.support@mt.comFax: +41 22 567 53 23
PolandTel. +48 22 440 69 52(local rate)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
IndiaTel. +91 180 010 25534(toll free)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
MalaysiaTel. +60 1800 81 6950(toll free)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
SingaporeTel. +65 800 101 3042(toll free)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
IndonesiaTel. +1 803 020 6159
Tel. +7 803 020 6159
(toll free)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
PhilippinesTel. +63 180 011 101 718(toll free)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
AustraliaTel. +61 1800 734 914(toll free)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
New ZealandTel. +64 800 466 033(toll free)E-mail:ph.lab.support@mt.comFax: +41 22 567 53 23
Mexico  E-mail:ph.lab.support@mt.com 
      
Egypt Tel: 08000009398(toll free)E-mail:ph.lab.support@mt.com
Service Hours: 08:00 – 13:30
Qatar Tel: 00800100311(toll free)E-mail:ph.lab.support@mt.comService Hours: 08:00 – 14:30
Saudi ArabiaTel: 8008140024(toll free) – STC Fixed & Mobile NetworkE-mail:ph.lab.support@mt.comService Hours: 08:00 – 14:30
Saudi ArabiaTel: 8008500354(toll free) – Mobily, Zain & Atheeb NetworkE-mail:ph.lab.support@mt.comService Hours: 08:00 – 14:30
UAETel: 8000185290(toll free)E-mail:ph.lab.support@mt.comService Hours: 08:00 – 15:30
                                 
 

For all other countries: please contact our local Mettler-Toledo organisation or your preferred distributor.

Services

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(Toll Free) 1800 22 8884 & 1800 1028 460
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Explore our Services - Tailored to Fit your Equipment

We support and service your measurement equipment through its entire life-cycle, from installation to preventive maintenance and calibration to equipment repair.

Uptime
Support & Repair
Performance
Maintenance & Optimization
Compliance
Calibration & Quality
Expertise
Training & Consulting

Publications

FAQ


 

1. What is a pH meter?

A pH meter is an analytical instrument used to measure the activity of hydrogen ions in a solution which is then expressed as pH. Measuring pH is a widely applied analytical technique in various fields and ranges from laboratory measurements to process applications. With our pH meters, one can also measure other important parameters like Conductivity, Ion Concentration, ORP, and Dissolved Oxygen. This page showcases the types of laboratory pH meters and their applications.


 

2. Why should I use a pH meter for measurements instead of a pH indicator?

There are mainly two systems to measure pH: pH indicators and pH meters. However, not all of them provide the same accuracy and quality level. A comparison between two widely used methods is shown below:

pH indicator strips
pH meter


 

3. How does a pH meter work?

A pH meter measures the potential differences between a reference electrode (like Calomel or Ag/AgCl) and a pH electrode (glass electrode). This difference between the two electrodes is related to the concentration of H+ ions in the solution. Therefore, the difference in potential corresponds to the acidity / pH of the solution.


 

4. What does a pH measurement system consist of?

The tools necessary for pH measurements are relatively uncomplicated and provide reliable measurements when used correctly. A typical pH meter requires two main tools:

pH measurement system


 

5. What are the different applications of a pH meter?

pH meters are used for a variety of applications across many sectors such as:

Agriculture
Food and Beverages
Water Analysis
Pharmaceutical analysis
Paints, pigments and dyes
Cosmetics, flavors and fragrances
Electroplating


 

6. How to choose the right pH meter for your application?

The choice of pH meter largely depends upon the type of application (field or laboratory). Based on the application and its needs, the meters are classified as:

Benchtop pH meter
Portable pH meter


 

7. Does METTLER TOLEDO's pH meter support compliance?

Yes, we have pH meters that are specially designed to meet most stringent compliance needs. Our LabX® PC software offers all that is needed for perfect compliance support.


 

8. Does METTLER TOLEDO support installation qualification for my pH meter?

Yes, we offer professional installation, qualification and calibration services. These services will guarantee accurate and precise measurements making the user worry-free when it comes to possible compliance issues during quality audits.


 

9. Is it necessary to calibrate the pH meter? How to calibrate a pH meter?

Yes, calibration helps in determining that the instrument is functioning correctly. Calibration is necessary to adjust the slope and offset of an electrode to their true values for the measuring system in question. With routine calibration of the pH meter, ion meter, DO meter and conductivity meters, one can confidently do the measurements.

pH meters are calibrated with appropriate laboratory calibration solutions of known pH. The frequency of calibration depends upon the frequency of the usage of the meter and applications. For details please refer to the following calibration video.

pH Calibration: A Handy How-To Guide

pH Calibration: A Handy How-To Guide


 

10. Should I use a single or multi-parameter pH meter?

This depends on the application. Dedicated single channel meters are used to measure one parameter at a given instance like:

a. pH
b. ORP
c. Ion concentration
d. Conductivity
e. Dissolved oxygen

Whereas, multi-parameter instruments allow the measurement of more than one parameter at the same time. In addition, the instruments are available in different combinations. With these meters, it is possible to simultaneously measure for more than one parameter in the same sample.


 

11. What is the conductivity meter used for?

A conductivity meter measures the conductivity or amount of electrical conductance of a solution. Conductivity is an important parameter and has several applications in water analysis, food and beverage, electronics and pharmaceutical industries.


 

12. Does METTLER TOLEDO's pH meter support regional languages?

Yes, we have instruments that support 13 local languages. Selecting the right settings from the menu is intuitive because the instrument speaks your language. Currently, our instrument supports the English, German, French, Spanish, Portuguese, Italian, Russian, Chinese, Japanese, Korean, Polish, Thai and Turkish languages.


 

13. How resistant are METTLER TOLEDO pH meters against the spillage of water?

Our benchtop meters are built to last by withstanding spills on the housing and connections. This provides protection while allowing for easy cleaning with a damp cloth. Similarly, our portable meters are completely waterproof and made to withstand harsh and demanding field applications.

SevenCompact Benchtop pH meter and Seven2Go Portable pH meter
SevenCompact Benchtop pH meter and Seven2Go Portable pH meter


 

14. Is it possible to obtain the data print-out from METTLER TOLEDO pH meters?

Indeed, we have meters, which support the printing of results and other information to compact printers such as RS-P25 or USB-P25.


 

15. Do METTLER TOLEDO pH meters support automation?

Yes, our pH meters support automation. This is a good option for increasing the productivity and efficiency in your lab. For further details, please click here.


 

16. What are the different support options available for my pH meter?

The METTLER TOLEDO pH Competence and Support Center (pH CSC) comprises of a team of experts in direct electrochemical analysis. Due to the team's close contact with customers, technical support, product management and product development, quick advice and effective solutions can be provided, making this service rather unique in the world of pH analysis.

The offered technical and applicative support encompasses the following measuring parameters and the related METTLER TOLEDO pH Lab equipment:

  • pH
  • Redox (ORP)
  • Ion concentration (ISE)
  • Conductivity
  • Dissolved oxygen (DO)


 

17. What optional accessories can I use along with the pH meter?

The Following accessories can be used along with the pH meter to improve its function:

  • Electrode arm (included with most bench meter kits)
  • Magnetic stirrer
  • Printer
  • Barcode reader
Know the Risk of Your pH Measurement
Ion Selective Electrode Guide – Theory and Practice
How to Measure pH in Small Samples
Join the GEP eLearning Program
pH Toolbox for Life Sciences
pH Theorie Guide
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