The Natural Organic Dye MSn Library for Museum and Art Conservation applications was created using common known colorant sources (pre-1856) obtained from plants and animals (Kremer Pigmente). Femtograms of sample can be screened to determine the source of colorant by running a simple High Performance Liquid Chromatography (HPLC) mass spectrometry (MS) method with the Bruker amaZonTM SL ion trap mass spectrometry system combined with automatic MSn reference library searching. amaZon SL 離子阱電噴霧質譜