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

Professional portable pH meter is equipped with a backlit LCD display.1 to 5 points calibration with automatic recognition...


Benchtop pH / Ion Meter YR01826

Precision benchtop pH/ion meter, 1 to 5 points calibration, selectable concentration units. The meter is suitable for measuring...


YR01838 Online Industrial pH Controller

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

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. BNC...


Our Best Selling pH Meters

  • Professional portable pH meter is equipped with a 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.
  • Auto-Read function senses and locks the measurement endpoint.
  • Auto-Power Off effectively conserves battery life.
  • Setup menu allows setting the pH buffer group, number of calibration points, resolution, stability criteria, date and time, etc.

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.


What Are the Risks Associated with the Use of Laboratory pH Meters?

In laboratories around the world, pH meters are a useful tool for making accurate measurements of liquids and other materials, these meters are a safe and quick...

How are pH Meters Used in Laboratories Disinfected? -Laboratory

PH measurement is an important part of the work done in laboratories, since it allows users to detect the level of acidity or alkalinity of a solution...

What Advantages Does the Use of PH Meters in Laboratories Offer?

In today’s times, the importance of science is emphasized and, as a result, the use of state-of-the-art scientific instruments, the use of pH...

What Precautions Should Be Taken When Using pH Meters in the Laboratory?

pH meters are essential devices in the laboratory; they allow scientists to measure the degree of acidity and alkalinity of a sample. Because of this...

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 the Ph meters

To know the price of the Autoclaves 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 on the contrary it should be manufactured. 
  2. The type of freight you have chosen may be; air or sea.
  • Equipment in stock:  

– Delivery Time (Aereo): 15-30 days.  

– Delivery Time (Maritimo): 45-60 days. 

  • Equipment not in stock:  

– Delivery Time (Aereo): 30-60 days.  

–Delivery Time (Maritimo): 60-90 days. 

You can make your purchase through: 

  1. By email: [email protected] 
  2. By phone: +33 (0) 1 78 95 87 02
  3. Electronic commerce: Through Kalstein's official website in his country. 
All Kalstein equipment has a 1-year warranty against manufacturing defects. The warranty does not cover damage caused by a poor installation or operation by the user, transportation defects or 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 inductions and technical support through new online methods. You can visit our inductions, technical assistance and guidance videos provided by a Kalstein team through our YouTube channel (Kalstein English). HERE

Of course, you can request a quote for the Kalstein team of interest, directly from our official website. Once you have identified the model of your choice, click HERE

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