Innovation and tradition: These are the driving forces which have made of Heinz Walz GmbH one of the world’s top producers of highly sophisticated photosynthesis measuring systems. Close connections to leading scientists in basic and applied research have stimulated many innovative developments. Excellence in product quality and service have been a tradition of this company since its founding in 1972. The current product line ranges from the well-known PAM chlorophyll fluorometers and light measuring equipment to gas-exchange systems for physiological and ecophysiological research. Cold traps and measuring-gas coolers complement the line of products.