Ph meters

A pH meter is commonly composed of an electronic amplifier and two electrodes, a pH measuring electrode, a reference electrode or alternatively a combined electrode and some type of screen calibrated in pH units. The reference electrode has a known, constant and stable potential. In the pHmetro design we find rod-like structures, commonly made of glass. 
The pH.measuring electrode has a glass bulb specifically designed to be selective to the hydrogen ion concentration, with an output in millivolts that varies as the alterations in the relative concentration of hydrogen ions inside and outside the bulb. The reference electrode output does not change with the activity of the hydrogen ions. 

Types of pH meters a laboratory may need


Portable pH meter is a type of pH meter consisting of an electronic amplifier and a pair of electrodes, or also a combination electrode, and some type of screen calibrated in pH units. It usually has a glass electrode and a reference electrode, or a combination electrode.

The advantage of this device is that it allows us to mobilize and thus measure different types of substances in the field (field measurements). The electrodes used in this equipment are rod structures, usually made of glass, with a light bulb containing the sensor at the bottom. The glass electrode used to measure the pH has a glass bulb specifically designed to be selective to the concentration of hydrogen ions. 

Table pH meters

  • Automatic temperature compensation ensures accurate readings over the entire range.
  • The auto-read function detects and locks the measurement end point.
  • The expired calibration alarm prompts the user to calibrate the meter regularly.
  • The setup menu allows you to configure the number of calibration points, stability criteria, temperature unit, date and time, automatic shutdown, etc.
  • The restart function automatically resumes all settings to factory defaults.
  • Extended memory stores or retrieves up to 500 data sets.
  • USB communication interface for data transfer and timed interval readings.

In Kalstein you can find the ideal pH meters for your laboratory

There are countless models, so it is normal that you do not know which pH Meters to buy to meet your needs. At Kalstein, we evaluate you to find what you're looking for.

Portable pH Meter YR0220A – YR0210A

Setup menu allows setting the pH buffer group, number of calibration points, resolution, stability criteria, date and time...


YR01825 Benchtop pH / Ion Meter

Professional pH and ion meter, 2 to 5 points calibration, setup menu contains 20 options. The meter is suitable ...


YR01838 Online Industrial pH Controller

Industrial online pH controller, 1 to 3 points calibration, 4 to 20mA outputs. The meter is suitable for monitoring...


Pocket pH Tester YR01804 

Digital pocket pH meter, Manual Temperature Compensation. The tester comes with a plastic body pH electrode for outdoor applications, accuracy: 0.01pH....


Our Best Selling pH Meters

  • • Precision benchtop pH meter is equipped with a large backlit LCD display.
    • 1 to 5 points calibration with automatic recognition for USA, NIST and DIN buffers.
    • Automatic electrode diagnosis shows the pH slope and offset.
    • Automatic temperature compensation ensures accurate readings over the entire range.
    • Calibration due alarm prompts user to calibrate the meter regularly.

Analysis of the best pH meters for your laboratory

PHmeter: Technology and accuracy

The measurement of pH (hydrogen potential) in the laboratory is one of the most important parameters that are ...


 PH meter: what is it used for?    

A pH meter is a laboratory instrument for scientific use, which measures the activity of the hydrogen ion in aqueous...


What is pH and how is it measured?

pH is the unit of measurement that describes the degree of acidity or alkalinity and is measured on a scale...


pH meter vs. dissolved oxygen meter

The pH is the unit of measurement that describes the degree of acidity or alkalinity and is measured on a scale ...


Catalog of pH Meters models on offer


Guides to becoming an expert in pH Meters

At Kalstein we are manufacturers of PH Meters equipment  with the highest quality and the best technology on the market, we leave you some guides so you know more about our product.

pH meter or pH meter: How should it be used?

A pH meter is an instrument used to measure the acidity or alkalinity of a solution. The information provided by this...

How Do You Calibrate A Laboratory pH Meter?

pH meters are an essential tool in the laboratory, used to measure the level of acidity and basicity of a solution,...

What are the Benefits of Using PH Meters in Laboratories?

The PH meter is the most commonly used measuring device in laboratories; it is designed to measure the acidity ...

What are the differences between: PH Meter, Ion Meter and Conductivity Meter?

Firstly, measuring instruments are important and fundamental in laboratories, they are equipment that are created to provide a solution to professionals, for monitoring their activities...

Videos of Working pH Meters

In this section you can find, our pH meters in operation, packaged, receiving service, etc.

PH Meters in Operation

A pH meter consists of three essential parts: a pH measuring electrode, a reference electrode and a high input impedance meter. The reference electrode has a known, constant and stable potential. The pH electrode can be considered as if it were a battery, with a voltage that varies according to the pH of the measured solution. The pH-determining electrode is a hydrogen-ion sensitive glass bulb, with a millivolt output that varies as the relative concentration of hydrogen ions within and outside the bulb changes.

The reference electrode output does not change with the activity of the hydrogen ions.  The pH electrode has a very high internal resistance, which makes it difficult to measure the voltage variation with the pH. Therefore, the input impedance of the pH meter and the dispersion resistances are important factors.

Frequently Asked Questions about pH Meters

To know the price of pH meters we invite you to send us an email with your request through the contact form.

The delivery time of your Kalstein product will depend on the following: 
  1. If the equipment of your interest is in stock or if it must be manufactured. 
  2. The type of freight you have chosen may be either air or sea.

Equipment in stock:  

- Delivery Time (Air): 15-30 days.  
- Delivery Time (Maritime): 45-60 days. 
Equipment not in stock:  
- Delivery Time (Air): 30-60 days.  
- Delivery Time (Maritime): 60-90 days. 

You can purchase through: 

  1. By email: [email protected] 
  2. By telephone: +33 (0) 1 78 95 87 02
  3. commerce: Via Kalstein's official website in your country. 
All Kalstein equipment has a 1-year warranty against manufacturing defects. The warranty does not cover damage caused by poor installation or operation by the user, transport defects or by uses other than those specified by the manufacturer. Warranty excludes electrical or consumable parts. For more information visit our “terms and conditions” by clicking HERE

At Kalstein, we provide our customers with induction and technical support through new online methods. You can visit our induction videos, technical assistance and guidance provided by a Kalstein team through our YouTube channel (Kalstein English). HERE

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