{"1":{"study_id":"ST001335","analysis_id":"AN002224","analysis_summary":"HILIC POSITIVE ION MODE","analysis_type":"MS","chromatography system":"Dionex UltiMate 3000","column_name":"Waters XBridge BEH Amide XP (50 x 2.1mm,2.5um) with Thermo Accucore HILIC guard","chromatography_type":"HILIC","ms_instrument_name":"Thermo Q Exactive HF hybrid Orbitrap","ms_instrument_type":"Orbitrap","ms_type":"ESI","ion_mode":"POSITIVE","nmr_instrument_type":"","nmr_experiment_type":"","spectrometer_frequency":"","nmr_solvent":"","units":"peak area"},"2":{"study_id":"ST001335","analysis_id":"AN002225","analysis_summary":"Reversed phase NEGATIVE ION MODE","analysis_type":"MS","chromatography system":"Dionex UltiMate 3000","column_name":"Thermo Higgins C18 (50 x 2.1mm,3um)","chromatography_type":"Reversed phase","ms_instrument_name":"Thermo Q Exactive HF hybrid Orbitrap","ms_instrument_type":"Orbitrap","ms_type":"ESI","ion_mode":"NEGATIVE","nmr_instrument_type":"","nmr_experiment_type":"","spectrometer_frequency":"","nmr_solvent":"","units":"peak area"}}