Mobile, Secure, Fast And Inexpensive

Analyses can be performed on site without previous knowledge of chemistry or laboratory equipment with our test kits.

Reduce Costs And Improve Quality

Improve your water treatment process with our online analysis instruments.

Water is our Element

Water analysers – Water quality – Water treatment

Gebrüder Heyl Analysentechnik GmbH & Co.KG has been working in industrial water treatment for over 60 years.
We develop and produce measuring and control equipment for the water analysis with 50 employees. Our Testomat series measures more than 20 parameters, including hardness, carbonate hardness, free chlorine and chlorine dioxide.
Our devices are used, for example, in the production of drinking water, in swimming pools, in the food industry as well as in industrial cooling and heating circuits.
Our Chemical Division produces the appropriate indicators and reagents for the devices. In addition we develop and manufacture individual analysis instruments on behalf of our customers.

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Product catalog

Jobs and Career

In this section, we inform you about the topics of application, training, internships or student traineeships. Get an overview of the many employment opportunities at Gebrüder Heyl Analysentechnik.


Disposal of old devices (WEEE)

As a manufacturer of electrical devices, we are obliged to label our appliances and to inform about the possibility of returning old Heyl devices.
For further information, please refer to our manufacturer’s declaration on old devices.

International Visits to Trade Fairs

In 2024 we will participate again on important trade fairs of the water treatment industry.

We will be respresented by Heyl Brothers North America L.P. on all american expositions.




Water Analysis Instruments, Water Quality, Water Treatment News

Testomat® PRO Fe monitors iron content

The new Testomat® PRO Fe iron analyser is the second device in our new Testomat PRO series.

It monitors the iron content (II) + (III) in water in the range from 0.00 to 1.00 ppm.





Our new calcium specialist Testomat® PRO Ca self clean

The new Testomat® PRO Ca self clean calcium measuring device ensures water quality when blending drinking water from several sources.
drinking water from several sources. It has an integrated cleaning function for the measuring chamber and is the first device in our new Testomat PRO device series.

Its measuring range is 0 – 33°dH or 0 – 60°f.