For over 20 years PSI has been specializing in the design and manufacture of sophisticated, high-end scientific instrumentation for research in agriculture and biological sciences. Products based on the latest techniques and components are used in scientific programs in many countries throughout the world. Example of instrumentation developed for plant biotechnological research are chlorophyll fluorometers, fluorescence imaging devices, large-scale photobioreactors, compact hand-held instruments based on various optical signals, LED panels, growth chambers, large automated plant screening devices with integrated fluorescence and thermal imaging and advanced microimaging and micromanipulating devices. Everyday contacts with researchers are the base of our policy of continuous development. PSI participates in a number of projects supported by the Czech government and European Economic Space Organization.