The laboratory notebook is an essential working tool for the researcher. It is used for documenting and dating any experiments, work, research results and original ideas. Laboratory notebook is the memory of the researchers (traceability) and an element for excellence and professionalism in the field of scientific research. Additionally, it can be considered as an essential tool to protect the research results and as a key element in the technology transfer policy. This laboratory notebook established by the LIEU network was adopted simultaneously by all the French speaking universities in Belgium in 2005.