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Find out here about all products and projects in the field of hydrology.

Our products in the field of hydrology

Select here for which area you are looking for a product. Suitable products and applications will then be displayed. Should you still have questions, please do not hesitate to contact us by phone or e-mail.

FAQ - frequently asked questions

Windows10-compatible operating software is available for all current and most older YSI devices.

Practically all measuring devices from the manufacturer YSI are maintained and repaired in our own workshop, which reduces costs and shortens repair times. Measuring instruments from other manufacturers must usually be sent in.

There is always the possibility to test a loan unit for one week without obligation (subject to availability). We would be pleased to demonstrate the device at your premises or send it to you free of charge.

Mass development of cyanobacteria can severely reduce water quality and significantly restrict water use. They produce a large number of secondary metabolites which act as allelochemicals, antibiotics, hormones and toxins and can damage e.g. fish and zooplankton. Some of the toxins are among the most potent natural toxins and can also be dangerous to human health. For example, bathers can develop allergic skin reactions and inflammation. Swallowing water containing cyanobacteria can also cause stomach and intestinal infections.


Nowadays the turbidity of a liquid is still determined optically, but is measured by means of electronic evaluation. The wavelength of the measuring light is usually in the infrared range at 860 nm (according to ISO 7027).  As a rule, a distinction is made between two measuring methods: The attenuation of the transmitted light radiation (transmitted light), best suited for the detection of larger turbidity levels. The sideways scattering of light radiation (scattered light), best suited for the detection of small turbidities.


Yes, a winch controlled by the depth position of the multi-parameter probe can record water quality parameters at different depths at selected time intervals. In this way, daily variations in stratification can be measured, recorded and made available via telemetry.

You send us your defective device and we take care of everything else. If a replacement is necessary, we can send a replacement unit in individual cases after checking it (subject to availability). Repairs are carried out by us or by the manufacturer. We try to carry out as many repairs as possible in-house to keep repair times as short as possible.


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We are happy to advise you!