The portable cuvette system WATER-PAM-II belongs to the group of WALZ PAM fluorometers for aquatic research.

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High Quality Instrumentation for Plant Sciences

Combining innovation and tradition have made the Heinz Walz GmbH one of the world’s top producers of photosynthesis measuring systems.


High-end systems for 2D and 3D imaging of chlorophyll fluorescence from the microscopic to the leaf level.

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The MICRO-PAM is one of the WALZ systems designed for long-term monitoring of photosynthesis.

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The DUAL-KLAS-NIR is an example of WALZ devices developed for basic research.

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Meetings & News

Upcoming Meetings

August 28 - September 01, 2022
Botanik-Tagung 2022 - International Conference of the German Society for Plant Sciences
Bonn, Germany

August 28 - 31, 2022
32nd ESCPB Congress (European Society of Comparative Physiology and Biochemistry)
Naples, Italy

September 07 - 10, 2022
117° Congresso della Società Botanica Italiana / VIII International Plant Science Conference
Bologna, Italy

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Macro for O-I1-I2-P/OJIP parameter extraction

Four Walz-Instruments allow the measurement of O-I1-I2-P/OJIP transients: PAM-2500, MULTI-COLOR-PAM, DUAL-PAM-100 and DUAL-KLAS-NIR. So far, no tool was available for the quick extraction of parameters from the transients. The present Macro, which was written by Dr. Katharina Siebke, can extract a selected set of parameters, physically describing the polyphasic rise.

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Heinz Walz GmbH Celebrates its 50th Anniversary

In 1972, Heinz Walz started his firm as a one-man enterprise with support of his wife, Hannelore, who took care of the unavoidable small business demands. Besides his professional qualifications as master craftsmen and electrical engineer, his chief start-up capital was a patented concept for measuring photosynthetic CO2 uptake by plants.

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