Poster Presentation Authors: Alberto MIcol, Nausicaa Delmotte, Magda Arnaboldi, Joerg Retzlaff et al. Title: The ESO science data standard for 1 d spectrum Abstract : We present the science data standard for 1d spectrum adopted by ESO in the framework of publication of external and internal data products via the ESO science archive facility. This standard represents a requirement for any pipelines developed for new spectrographs to be later deployed on ESO facilities.