nist msms January 26, 2022, 10:31:48 AM Hello,I have a question about the library Nist msms, when i do "Export to library browser" to analyze the peak by m/z, this parametre is changed automatically, no decimal is affiched and the value is increased ( for example, as mentionned attched, 890.64 that is changed to 891 ). Even if the compound is disponible at the data base, of negatif mode.I would like to know how can i conserve the same m/z affiched in Xcalibure.thank you